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Articoli di riviste sul tema "Coniferâs, Fossil"

Autore: Grafiati

Pubblicato: 25 luglio 2024

Ultima modifica: 31 luglio 2025

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1

Ram-Awatar and A. Rajanikanth. "Triassic Conifer wood from the Tiki Formation, South Rewa Basin, Madhya Pradesh, India." Journal of Palaeosciences 56 (December 31, 2007): 127–32. http://dx.doi.org/10.54991/jop.2007.63.

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The present paper records a conifer wood from the Triassic sequence of the Tiki Formation, ~3 km NE of Tiki Village, district Shahdol, Madhya Pradesh, India. Since Triassic wood records are hardly known from India when compared to leaf fossils, the present report of podocarpean wood provides additional evidence for the existence of conifers in the otherwise pteridosperm dominated fossil flora of South Rewa Basin during the Carnian-Norian times.

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2

Jordan, Gregory J., Raymond J. Carpenter, Jennifer M. Bannister, Daphne E. Lee, Dallas C. Mildenhall, and Robert S. Hill. "High conifer diversity in Oligo-Miocene New Zealand." Australian Systematic Botany 24, no. 2 (2011): 121. http://dx.doi.org/10.1071/sb11004.

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Eight species of Podocarpaceae foliage are recognised from the late Oligocene or early Miocene Newvale site, South Island, New Zealand, and the following five new species are described: two of Dacrydium Lamb. and one each of Dacrycarpus (Endl.) de Laub., Phyllocladus Rich. ex Mirb. and Halocarpus Quinn. The latter is the first macrofossil record of this New Zealand endemic genus. All these conifers, plus Agathis Salisb., Microcachrys Hook.f. and Podocarpus Pers., co-occurred in the local vegetation at Newvale. In conjunction with prior records of macrofossils and pollen, these fossils indicate

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3

Yao, Zhao-Qi, Lu-Jun Liu, Gar W. Rothwell, and Gene Mapes. "Szecladia new genus, a late Permian conifer with multiveined leaves from South China." Journal of Paleontology 74, no. 3 (2000): 524–31. http://dx.doi.org/10.1017/s0022336000031784.

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A conifer from the uppermost Permian with small, helically arranged leaves is described from the Guangxi Autonomous Region and Guizhou Province of South China as Szecladia multinervia, new genus and species. The material includes both impression specimens and the first anatomically preserved Paleozoic conifer fossils from China. Shoots are irregularly branched, with small, helically arranged, multiveined leaves. Stems display an endarch eustele with abundant, dense wood. Leaf traces diverge from the stele as a single bundle that divides several times in the cortex and at the base of the leaves

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4

Bomfleur, Benjamin, Christian Pott, and Hans Kerp. "Plant assemblages from the Shafer Peak Formation (Lower Jurassic), north Victoria Land, Transantarctic Mountains." Antarctic Science 23, no. 2 (2010): 188–208. http://dx.doi.org/10.1017/s0954102010000866.

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AbstractThe Jurassic plant fossil record of Gondwana is generally meagre, which renders phytogeographic and palaeoclimatic interpretations difficult to date. Moreover, plant fossil assemblages mainly consist of impressions/compressions with rather limited palaeobiological and palaeoecological significance. We here present a detailed survey of new Early Jurassic plant assemblages from the Pliensbachian Shafer Peak Formation, north Victoria Land, Transantarctic Mountains. Some of the well-preserved fossils yield cuticle. The floras consist of isoetalean lycophytes, sphenophytes, several ferns, b

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5

Hansen, Barbara C. S. "Conifer stomate analysis as a paleoecological tool: an example from the Hudson Bay Lowlands." Canadian Journal of Botany 73, no. 2 (1995): 244–52. http://dx.doi.org/10.1139/b95-027.

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The identification of conifer stomata in fossil pollen preparations of peat cores from the Hudson Bay Lowlands is used to determine the local presence of conifers in lieu of macrofossil analyses. The differentiation of eight conifer stomate types (Picea type, Larix laricina, Pinus sp., Abies sp., Tsuga mertensiana, Tsuga heterophylla, Chamaecyparis nootkatensis, and Thuja type) is accomplished with a key, diagrammatic stomate illustrations, photographs, and measurements. Results of fossil conifer-stomate analyses indicate that both Picea and Larix arrived locally in the Albany River area of th

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6

Kunzmann, L., B. A. R. Mohr, and M. E. C. Bernardes-de-Oliveira. "Gymnosperms from the Lower Cretaceous Crato Formation (Brazil). I. Araucariaceae and Lindleycladus (incertae sedis)." Fossil Record 7, no. 1 (2004): 155–74. http://dx.doi.org/10.5194/fr-7-155-2004.

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Fossil conifers from the Early Cretaceous, most likely late Aptian, Crato Formation were studied. The excellent preservation of several of those fossils allowed detailed investigations of the leaf epidermis by light microscope (LM) and by scanning electron microscope (SEM). Members of two conifer taxa were recognized: The Araucariaceae are represented by a female cone of cf. <i>Araucaria</i> spec. A juvenile cone (<i>Araucariostrobus spec.</i>) and sterile foliage shoots of <i>Brachyphyllum obesum might</i> be attributed to the Araucariaceae as well. The mor

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7

Atkinson, Brian A., Dori L. Contreras, Ruth A. Stockey, and Gar W. Rothwell. "Ancient diversity and turnover of cunninghamioid conifers (Cupressaceae): two new genera from the Upper Cretaceous of Hokkaido, Japan." Botany 99, no. 8 (2021): 457–73. http://dx.doi.org/10.1139/cjb-2021-0005.

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Conifers of the taxodiaceous grade of Cupressaceae were more diverse and widespread during the Mesozoic than they are today. The earliest diverging subfamily, Cunninghamioideae, only includes a single extant genus, but has at least 10 fossil genera. Here, two additional cunninghamioid genera are characterized on the basis of permineralized seed cones from the Upper Cretaceous of Hokkaido, Japan. These conifers display seed cone characters typical of cunninghamioids; however, they have a mosaic of characters that are not seen in any reported conifer of Cupressaceae. They are, therefore, designa

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8

Kvaček, Jiří, and Jakub Sakala. "Late Cretaceous flora of James Ross Island (Antarctica) – preliminary report." Czech Polar Reports 1, no. 2 (2011): 96–103. http://dx.doi.org/10.5817/cpr2011-2-9.

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Fossil plants from Late Cretaceous strata (Hidden Lake Formation and Santa Marta Formation) of James Ross Basin exposed in the northern part of the James Ross Island are preliminary described. Both formations contain plant mega fossils, petrified wood, and charcoalified mesofossils. Fossil plants from the Hidden Lake Formation are represented by leaf impressions of pteridophytes (Microphyllopteris, Delosorus, Lygodium), conifers (Elatocladus, Brachyphyllum, Pagiophyllum, Araucaria, Podozamites vel Lindleycladus), Bennettitales vel Cycadales (Zamites vel Dioonites sp.) and angiosperms (Cinnamom

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9

Condamine, Fabien L., Daniele Silvestro, Eva B. Koppelhus, and Alexandre Antonelli. "The rise of angiosperms pushed conifers to decline during global cooling." Proceedings of the National Academy of Sciences 117, no. 46 (2020): 28867–75. http://dx.doi.org/10.1073/pnas.2005571117.

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Competition among species and entire clades can impact species diversification and extinction, which can shape macroevolutionary patterns. The fossil record shows successive biotic turnovers such that a dominant group is replaced by another. One striking example involves the decline of gymnosperms and the rapid diversification and ecological dominance of angiosperms in the Cretaceous. It is generally believed that angiosperms outcompeted gymnosperms, but the macroevolutionary processes and alternative drivers explaining this pattern remain elusive. Using extant time trees and vetted fossil occ

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10

Taylor, David W., J. Michael Moldowan, and Leo J. Hickey. "Investigation of the terrestrial occurrence and biological source of the petroleum geochemical biomarker oleanane." Paleontological Society Special Publications 6 (1992): 286. http://dx.doi.org/10.1017/s2475262200008467.

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Oleanane is a triterpane that is commonly found in Late Cretaceous (Campanian) through Cenozoic marine and deltaic rocks and related oils. Based on its affinity to the β-Amyrin group of natural products and its abundance in Tertiary deltaic sediments and oils, such as in the Niger Delta, oleanane is thought to be a geochemical fossil of terrestrial flowering plants. The β-Amyrin group forms the basis of many angiosperm triterpenoids and triterpenoid saponins. These compounds appear in moderately advanced flowering plant lineages and are often used as a defense against herbivores. This group of

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11

Alexander, R., R. A. Noble, and R. I. Kagi. "FOSSIL RESIN BIOMARKERS AND THEIR APPLICATION IN OIL TO SOURCE-ROCK CORRELATION, GIPPSLAND BASIN, AUSTRALIA." APPEA Journal 27, no. 1 (1987): 63. http://dx.doi.org/10.1071/aj86007.

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Diterpanes occur widely in the resins of modern conifers, suggesting that sedimentary diterpanes are chemical markers for fossil resins, particularly those derived from conifers. In this paper, the use of the relative abundance of these chemical fossils for establishing genetic relationships between the organic matter in sediments and crude oils has been demonstrated using sediments and crude oils from the Gippsland Basin.The crude oils were characterised by their remarkably uniform distributions of diterpanes and similar relative amounts of diterpanes and hopanes. In contrast, the sediments s

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12

Wilf, Peter. "Eocene “Chusquea” fossil from Patagonia is a conifer, not a bamboo." PhytoKeys 139 (February 3, 2020): 77–89. http://dx.doi.org/10.3897/phytokeys.139.48717.

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Chusquea oxyphylla Freng. &amp; Parodi, 1941, a fossilized leafy branch from the early Eocene (52 Ma), late-Gondwanan Laguna del Hunco biota of southern Argentina, is still cited as the oldest potential bamboo fossil and as evidence for a Gondwanan origin of bamboos. On recent examination, the holotype specimen was found to lack any typical bamboo characters such as nodes, sheaths, ligules, pseudopetioles, or parallel leaf venation. Instead, it has decurrent, clasping, univeined, heterofacially twisted leaves with thickened, central-longitudinal bands of presumed transfusion tissue. These

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13

Wilf, Peter. "Eocene "Chusquea" fossil from Patagonia is a conifer, not a bamboo." PhytoKeys 139 (February 3, 2020): 77–89. https://doi.org/10.3897/phytokeys.139.48717.

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Chusquea oxyphylla Freng. & Parodi, 1941, a fossilized leafy branch from the early Eocene (52 Ma), late-Gondwanan Laguna del Hunco biota of southern Argentina, is still cited as the oldest potential bamboo fossil and as evidence for a Gondwanan origin of bamboos. On recent examination, the holotype specimen was found to lack any typical bamboo characters such as nodes, sheaths, ligules, pseudopetioles, or parallel leaf venation. Instead, it has decurrent, clasping, univeined, heterofacially twisted leaves with thickened, central-longitudinal bands of presumed transfusion tissue. These and

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14

NAUGOLNYKH, Serge V. "Kuedinskie Kluchiki, a Unique Middle Permian Biota Locality as a Key‐point for Reconstruction of Late Paleozoic Terrestrial Ecosystems of the Urals, Russia." Acta Geologica Sinica - English Edition 98, no. 4 (2024): 850–66. http://dx.doi.org/10.1111/1755-6724.15172.

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AbstractField work focused on the Kuedinskie Kluchiki locality, Perm region, Urals, Russia, which contains a rich assemblage of diverse fossil organisms including higher plants (equisetophytes, pteridosperms, ginkgophytes, conifers, vojnovskyans) represented by stems, leaves and reproductive organs; invertebrates (mollusks, arthropods), and tetrapods (temnospondyl amphibians, seymouriamorphs, cotylosaurs, synapsids, diapsids), as well as bony fishes. General characteristics of the taxonomical composition of the Kuedinskie Kluchiki locality are given. A new peltaspermalean pteridosperm taxon, C

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15

Mendes, Mário Miguel, and Else Marie Friis. "The Nossa Senhora da Luz flora from the Early Cretaceous (early Aptian-late Albian) of Juncal in the western Portuguese Basin." Acta Palaeobotanica 58, no. 2 (2018): 159–74. http://dx.doi.org/10.2478/acpa-2018-0015.

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AbstractA new fossil flora is described from the Early Cretaceous of the western Portuguese Basin, based on a combined palynological-mesofossil study. The fossil specimens were extracted from samples collected in the Nossa Senhora da Luz opencast clay pit complex near the village of Juncal in the Estremadura region. The plant-bearing sediments belong to the Famalicão Member of the Figueira da Foz Formation, considered late Aptianearly Albian in age. The palynological assemblage is diverse, including 588 spores and pollen grains assigned to 30 genera and 48 species. The palynoflora is dominated

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16

Miller, Dane M., Ian M. Miller, and Stephen T. Jackson. "Biogeography of Pleistocene conifer species from the Ziegler Reservoir fossil site, Snowmass Village, Colorado." Quaternary Research 82, no. 3 (2014): 567–74. http://dx.doi.org/10.1016/j.yqres.2014.06.003.

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AbstractPleistocene biogeography of conifer species is poorly known in much of western North America. We conducted morphological studies on 201 conifer cones and cone fragments recovered from Pleistocene sediments at the Ziegler Reservoir fossil site (2705 m) near Snowmass Village, Colorado. The basin, formed ~155–130 ka, contains fossil-bearing lacustrine, palustrine, and colluvial sediments spanning approximately 85 ka. Using a suite of morphological characters, particularly cone-scale bracts, we differentiated species of Abies, Picea, and Pseudotsuga. All fossil Abies specimens were assigna

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17

Gee, Carole, Douglas Sprinkel, Mary Beth Bennis, and Dale Gray. "Silicified logs of Agathoxylon hoodii (Tidwell et Medlyn) comb. nov. from Rainbow Draw, near Dinosaur National Monument, Uintah County, Utah, USA, and their implications for araucariaceous conifer forests in the Upper Jurassic Morrison Formation." Geology of the Intermountain West 6 (November 20, 2019): 77–92. http://dx.doi.org/10.31711/giw.v6.pp77-92.

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A new local flora of silicified logs and wood has been discovered in the Upper Jurassic Morrison Formation in the Rainbow Draw area near Dinosaur National Monument, northeastern Utah, USA. Fossil logs and wood were found in the Salt Wash Member at nine sites at Rainbow Draw and at one site near Miners Draw, south of Blue Mountain. The fossil logs are large and relatively intact, the longest measuring 11 m. The wood is well preserved, coniferous, and can be identified to the species level. Diagnostic anatomical features include resin plugs in the ray cells and axial tracheids, araucarioid trach

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18

Matthews Jr., John V., Robert J. Mott, and Jean-Serge Vincent. "Preglacial and Interglacial Environments of Banks Island: Pollen and Macrofossils from Duck Hawk Bluffs and Related Sites." Géographie physique et Quaternaire 40, no. 3 (2007): 279–98. http://dx.doi.org/10.7202/032649ar.

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ABSTRACT Sediments ranging in age from Tertiary to Late Quaternary are exposed at Duck Hawk Bluffs near Sachs Harbour on Banks Island (NWT). Fossil pollen and macrofossils of plants and arthropods from various nonglacial sediments at Duck Hawk Bluffs and related sites on Banks and Victoria islands make it possible to infer some of the climatic/biotic changes during that time span. At the time of deposition of the Miocene-Pliocene Beaufort Formation, southern Banks Island supported a rich coniferous forest, containing several species of conifers and various hardwoods. An upper member of the Bea

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19

Kerp, Hans, Patrick Blomenkemper, Abdalla Abu Hamad, and Benjamin Bomfleur. "The fossil flora of the Dead Sea region, Jordan – A late Permian Garden of Delights." Journal of Palaeosciences 70, no. (1-2) (2021): 135–58. http://dx.doi.org/10.54991/jop.2021.12.

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The Umm Irna Formation, Jordan, holds one of the most peculiar late Permian plant–fossil assemblages worldwide. Over the last decades of field work, several localities close to the eastern shore of the Dead Sea have yielded a highly diverse ‘mixed flora’ of mesic to xeric environments encompassing elements that are typical either for different floral realms or for different time periods of Earth History. Taxa typical for particular floral realms include, e.g. Cathaysian gigantopterids and Lobatannularia, Euramerican conifers such as Otovicia hypnoides, or the characteristic Gondwanan seed fern

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20

Moreau, Jean-David, Romain Vullo, Sylvain Charbonnier, et al. "Konservat-Lagerstätten from the Upper Jurassic lithographic limestone of the Causse Méjean (Lozère, southern France): palaeontological and palaeoenvironmental synthesis." Geological Magazine 159, no. 5 (2022): 761–81. http://dx.doi.org/10.1017/s0016756821001382.

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AbstractSince the 1980s, the Upper Jurassic lithographic limestone of the Causse Méjean (southern France) has been known by local naturalists to yield fossils. However, until the beginning of the 21st century, this plattenkalk remained largely undersampled and scientifically underestimated. Here, we present the results of two decades of prospection and sampling in the Drigas and the Nivoliers quarries. We provide the first palaeontological inventory of the fossil flora, the fauna and the ichnofauna for these localities. The fossil assemblages show the co-occurrence of marine and terrestrial or

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21

Staccioli, Giuseppe, Alberto Sturaro, Giorgio Parvoli, Gloria Menchi, and Ugo Matteoli. "The Lipophilic Extractives of an Interglacial Fossil Picea abies from Zeifen (Germany)." Holzforschung 53, no. 4 (1999): 391–96. http://dx.doi.org/10.1515/hf.1999.065.

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Summary A fossil Picea abies from Zeifen (Germany), 100,000 years old and still presenting good physical and anatomical properties, is analysed with respect to its lipophilic content. Comparisons are made with a recent Picea abies, with a subfossil larch and with Taxodioxylon gypsaceum fossils ranging from 1.7 to 20 million years ago. Due to the relatively small age and the low degree of degradation, terpenes having structures intermediate between the original compounds and the final terpanes are looked for. Lipophilic components obtained from the fossil Picea abies by extraction with dichloro

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22

Brown, Peter M., Stephen E. Nash, and Douglas Kline. "Identification and dendrochronology of wood found at the Ziegler Reservoir fossil site, Colorado, USA." Quaternary Research 82, no. 3 (2014): 575–79. http://dx.doi.org/10.1016/j.yqres.2014.02.006.

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AbstractOver 300 wood fossils were collected from the Ziegler Reservoir fossil site near Snowmass Village in central Colorado, USA. Wood fossils range from fragments of stems and branches only a few centimeters in diameter and length to whole logs >50 cm diameter and >10 m length. Many of the fossils were collected from a “beach” horizon, where they appear to have been washed up on the side of the interglacial lake and buried. The wood is mainly fir (Abies sp.) or Douglas-fir (Pseudotsuga menziesii), with some spruce (Picea sp.), pine (Pinus sp.), and at least one other unidentified coni

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23

Herman, A. B., V. V. Kostyleva, P. A. Nikolskii, A. E. Basilyan, and A. E. Kotel’nikov. "New data on the late cretaceous flora of the New Siberia island, New Siberian Islands." Стратиграфия 27, no. 3 (2019): 53–69. http://dx.doi.org/10.31857/s0869-592x27353-69.

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New plant fossils collected in 2016 from the Derevyannye Gory Formation on the New Siberia Island are studied. Thirty species of fossil plants are identified and illustrated. They belong to liverworts, ferns, ginkgoaleans, conifers and angiosperms. Sixteen of them have not beed found in the New Siberia Flora before. A new angiosperm species Dalembia (?) gracilis Herman is described. The New Siberia Flora is characterised by a moderately high taxonomic diversity, predominance of conifers and angiosperms with large-leafed platanoids and trochodendroids being the most abundant among angiosperms,

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24

Leslie, Andrew B. "Predation and protection in the macroevolutionary history of conifer cones." Proceedings of the Royal Society B: Biological Sciences 278, no. 1720 (2011): 3003–8. http://dx.doi.org/10.1098/rspb.2010.2648.

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Conifers are an excellent group in which to explore how changing ecological interactions may have influenced the allocation of reproductive tissues in seed plants over long time scales, because of their extensive fossil record and their important role in terrestrial ecosystems since the Palaeozoic. Measurements of individual conifer pollen-producing and seed-producing cones from the Pennsylvanian to the Recent show that the relative amount of tissue invested in pollen cones has remained constant through time, while seed cones show a sharp increase in proportional tissue investment in the Juras

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Lacourse, Terri, J. Michelle Delepine, Elizabeth H. Hoffman, and Rolf W. Mathewes. "A 14,000 year vegetation history of a hypermaritime island on the outer Pacific coast of Canada based on fossil pollen, spores and conifer stomata." Quaternary Research 78, no. 3 (2012): 572–82. http://dx.doi.org/10.1016/j.yqres.2012.08.008.

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AbstractPollen and conifer stomata analyses of lake sediments from Hippa Island on the north coast of British Columbia were used to reconstruct the vegetation history of this small hypermaritime island. Between 14,000 and 13,230 cal yr BP, the island supported diverse herb–shrub communities dominated by Cyperaceae, Artemisia and Salix. Pinus contorta and Picea sitchensis stomata indicate that these conifers were present among the herb–shrub communities, likely as scattered individuals. Transition to open P. contorta woodland by 13,000 cal yr BP was followed by increases in Alnus viridis, Alnus

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26

Prakash, Neeru, Neelam Das, Nishith Y. Bhat, and Paras M. Solanki. "Reappraisal of palaeofloristics of Himmatnagar Sandstone vis-à-vis palaeogeographic significance." Journal of Palaeosciences 65, no. (1-2) (2016): 169–76. http://dx.doi.org/10.54991/jop.2016.308.

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The state of Gujarat physiographically comprises three distinct zones–the Gujarat Mainland, the Saurashtra and the Kachchh. The sedimentary deposits of Himmatnagar Sandstone (23°36'00": 72°57'45") are mainly exposed in Gujarat Mainland. Palaeobotanical study reveals occurrence of plant fossils Matonidium, Weichselia, Cladophlebis, Gleichenia, Sphenopteris, Dictyophyllum, Pachypteris, Pagiophyllum and Araucarites. Bennettitales are absent. Numerically pteridophytes are represented by 61%, pteridosperms are represented by 7% and cyacads are represented by 7% while conifers are represented by 24%

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Wilson, Jonathan P., and Andrew H. Knoll. "A physiologically explicit morphospace for tracheid-based water transport in modern and extinct seed plants." Paleobiology 36, no. 2 (2010): 335–55. http://dx.doi.org/10.1666/08071.1.

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We present a morphometric analysis of water transport cells within a physiologically explicit three-dimensional space. Previous work has shown that cell length, diameter, and pit resistance govern the hydraulic resistance of individual conducting cells; thus, we use these three parameters as axes for our morphospace. We compare living and extinct plants within this space to investigate how patterns of plant conductivity have changed over evolutionary time. Extinct coniferophytes fall within the range of living conifers, despite differences in tracheid-level anatomy. Living cycads, Ginkgo bilob

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Greenwood, David R., S. Bruce Archibald, Rolf W. Mathewes, and Patrick T. Moss. "Fossil biotas from the Okanagan Highlands, southern British Columbia and northeastern Washington State: climates and ecosystems across an Eocene landscape." Canadian Journal of Earth Sciences 42, no. 2 (2005): 167–85. http://dx.doi.org/10.1139/e04-100.

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The late Early to early Middle Eocene Okanagan Highlands fossil sites, spanning ~1000 km northsouth (northeastern Washington State, southern British Columbia) provide an opportunity to reconstruct biotic communities across a broad upland landscape during the warmest part of the Cenozoic. Plant taxa from these fossil sites are characteristic of the modern eastern North American deciduous forest zone, principally the mixed mesophytic forest, but also include extinct taxa, taxa known only from eastern Asian mesothermal forests, and a small number of taxa restricted to the present-day North Ameri

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Boyarina, Nataliya, and Ganna Kovalenko. "GEOBOTANICAL ANALYSIS OF PLANT FOSSIL ASSEMBLAGES FROM THE UPPER PENNSYLVANIAN LIMNIC DEPOSITS OF THE NORTHERN CAUCASUS." Collection of Scientific Works of the Institute of Geological Sciences of the NAS of Ukraine 16, no. 1 (2023): 81–97. http://dx.doi.org/10.30836/igs.2522-9753.2023.296583.

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Analysis of plant fossil assemblages from the Upper Pennsylvanian deposits of the Northern Caucasus was carried out within the intervals, which are compared with the megafloral zones of the Stephanian of the Western European scale. The identification of the taxonomic composition and the interpretation of environments of the Late Pennsylvanian plant communities showed that the Northern Caucasus vegetation was represented by wetland and seasonally dry forests of river valleys. The wetland forests were composed of the calamitalean-fern and calamitalean-fern-pteridosperm communities of the shores

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Gengwu, Liu, Li Haomin, and Leng Qin. "Occurrence of Late Miocene flora from north-east China." Journal of Palaeosciences 45 (December 31, 1996): 440–46. http://dx.doi.org/10.54991/jop.1996.1265.

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A flora containing both plant microfossils and megafossils has been reported from four placer gold wells in Huanan County, Heilongjiang Province of north-east China. Most of the pollen and megafossil plants are in common. Families Fagaceae, Betulaceae and Pinaceae are abundant in this fossil flora which probably implies a mixed conifer and deciduous broad-leaved forest of warm temperate climate. On the basis of associated vertebrate fossils and correlation with equivalent floras a Late Miocene age has been assigned.

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31

Pandya, Neeru, and Sukh-Dev. "Fossil flora of Gollapalle Formation." Journal of Palaeosciences 38 (December 31, 1989): 147–54. http://dx.doi.org/10.54991/jop.1989.1648.

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Abstract (sommario):

The plant megafossil assemblage of Gollapalle Formation, Andhra Pradesh is enriched and updated. The flora is chiefly constituted of Cladophlebis, Sphenopteris, Marattiopsis, Pachypteris, Taeniopteris, Ptillophyllum, Dictyozamites, Pterophyllum, Williamsonia, Bucklandia, Elatocladus, Pagiophyllum, Brachyphyllum and Araucarites. Conifers and cycadophytes are dominant: pteridophytes and pteridosperms are poorly represented. Early Cretaceous age is supported for the Gollapalle flora.

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32

Rothwell, Gar W., and Tamiko Ohana. "Stockeystrobusgen. nov. (Cupressaceae), and the evolutionary diversification of sequoioid conifer seed cones." Botany 94, no. 9 (2016): 847–61. http://dx.doi.org/10.1139/cjb-2016-0025.

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Abstract (sommario):

An anatomically preserved seed cone from Late Cretaceous (Santonian–Coniacian) sediments of the Yezo Group on the Japanese Island of Hokkaido documents additional diversity among sequoioid conifers, and reveals previously unknown mechanisms for pollination and post-pollination seed enclosure in the conifer family Cupressaceae. The cylindrical seed cone of Stockeystrobus interdigitata gen. et sp. nov., consists of a central axis bearing helically arranged bract–scale complexes. Individual complexes are tightly packed and peltate in form, with completely fused bracts and scales. Peltate heads of

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33

Pang, Li-bo, Shao-kun Chen, Xin Hu, Yan Wu, and Guang-biao Wei. "Fossil flying squirrels (Petauristinae, Sciuridae, Rodentia) from the Yumidong Cave in Wushan County, Chongqing, China." Fossil Record 27, no. 1 (2024): 209–19. http://dx.doi.org/10.3897/fr.27.e115693.

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Abstract (sommario):

Flying squirrels are important forest environment indicators. There have been many reports on them from fossil localities of the Late Cenozoic in southwest China, but relatively few detailed studies have been carried out on them. Numerous flying squirrel fossils of the Mid-Late Pleistocene were unearthed from the Yumidong Cave in Wushan County, Chongqing Municipality, China, providing excellent materials for morphological comparison and further research on this group. Four species have been recognised from this locality, including Pteromys volans, Trogopterus xanthipes, Belomys pearsonii and A

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34

Pang, Li-bo, Shao-kun Chen, Xin Hu, Yan Wu, and Guang-biao Wei. "Fossil flying squirrels (Petauristinae, Sciuridae, Rodentia) from the Yumidong Cave in Wushan County, Chongqing, China." Fossil Record 27, no. 1 (2024): 209–19. https://doi.org/10.3897/fr.27.115693.

Testo completo

Abstract (sommario):

Flying squirrels are important forest environment indicators. There have been many reports on them from fossil localities of the Late Cenozoic in southwest China, but relatively few detailed studies have been carried out on them. Numerous flying squirrel fossils of the Mid-Late Pleistocene were unearthed from the Yumidong Cave in Wushan County, Chongqing Municipality, China, providing excellent materials for morphological comparison and further research on this group. Four species have been recognised from this locality, including Pteromys volans, Trogopterus xanthipes, Belomys pearsonii and A

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35

Gomez, Bernard, Véronique Daviero-Gomez, Géraldine Garcia, et al. "Silicified plant megafossils from the upper Turonian of Vienne, western France." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 108, no. 4 (2017): 449–57. http://dx.doi.org/10.1017/s1755691018000105.

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Abstract (sommario):

ABSTRACTA new locality with silicified permineralised plant megafossils is reported from the upper Turonian of Colombiers, Vienne, western France. The plant fossil assemblage consists of Geinitzia reichenbachii (Geinitz) Hollick et Jeffrey and ‘Lomatopteris' superstes Saporta. Whilst G. reichenbachii is a worldwide widespread Cretaceous conifer, ‘L.' superstes is reported in western France for the first time. The latter fossil shows bipinnately compound leaf, marginal teeth, one thick primary vein, pinnate secondary veins and faint, reticulate, narrower veins. Besides its fern-like gross morph

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36

Wang, Xin, and Li-Jun Chen. "Shaolinia: A Fossil Link between Conifers and Angiosperms." Plants 13, no. 15 (2024): 2162. http://dx.doi.org/10.3390/plants13152162.

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Abstract (sommario):

The flowering plants (angiosperms) are the dominant and defining group of the Earth ecosystems today. However, from which group and by what way flowers, especially their gynoecia (the key characteristic organs of angiosperms), are derived have been key questions in botany, and have remained unanswered despite botanists’ efforts over centuries. Such an embarrassing situation can be attributed to the lack of plants with partially enclosed ovules, which are supposed fill a position between gymnosperms and angiosperms. Here, we report a fossil plant that has apparent coniferous vegetative and repr

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37

Rothwell, Gar W., and Ruth A. Stockey. "Pinaceous evolution illuminated by additional diversity of Early Cretaceous seed cones." Fossil Imprint 80, no. 1 (2024): 1–8. http://dx.doi.org/10.37520/fi.2024.003.

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Abstract (sommario):

An anatomically preserved fossil conifer seed cone has been discovered near Ono, California, providing additional evidence for the diversification of Pinaceae during the Aptian Stage of the Early Cretaceous. The specimen was measured and photographed, and then serial anatomical thin sections were prepared by the cellulose acetate peel technique. Selected peels were mounted on microscope slides, viewed, and photographed with transmitted light microscopy. Structure of the seed cone is similar to that of living and extinct representatives of the Pinaceae in the occurrence of helically arranged an

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38

Quamar, Md Firoze, Pooja Tiwari, and Biswajeet Thakur. "The modern pollen–vegetation relationship in Jammu, India: a comparative appraisal." Acta Palaeobotanica 61, no. 1 (2021): 1–19. http://dx.doi.org/10.35535/acpa-2021-0001.

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Abstract (sommario):

An understanding of the relationship between modern pollen and vegetation is a prerequisite for reconstruction of vegetation and climate change from fossil pollen records. We conducted palynological studies of thirty-five surface soil samples from the Jammu region of India, which revealed that Pinus, among the conifers (regional needle-leaved taxa), is over-represented in the pollen assemblage due to its high production and effective dispersal of pollen. Other coniferous and broadleaved (regional and/or extra-regional) taxa have comparatively lower values in the pollen assemblages, similar to

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39

Carpenter, Raymond J., Jennifer M. Bannister, Daphne E. Lee, and Gregory J. Jordan. "Proteaceae leaf fossils from the Oligo - Miocene of New Zealand: new species and evidence of biome and trait conservatism." Australian Systematic Botany 25, no. 6 (2012): 375. http://dx.doi.org/10.1071/sb12018.

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Abstract (sommario):

At least seven foliar taxa of Proteaceae occur in Oligo–Miocene lignite from the Newvale site. These taxa include two new species of the fossil genus Euproteaciphyllum, and previously described species of tribe Persoonieae and Banksia. Other specimens from Newvale are not assigned to new species, but some conform to leaves of the New Caledonian genus Beauprea, which is also represented in the lignite by common pollen. Two other Euproteaciphyllum species are described from the early Miocene Foulden Maar diatomite site. One of these species may belong to Alloxylon (tribe Embothrieae) and the oth

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40

Coiro, Mario, Guillaume Chomicki, and James A. Doyle. "Experimental signal dissection and method sensitivity analyses reaffirm the potential of fossils and morphology in the resolution of the relationship of angiosperms and Gnetales." Paleobiology 44, no. 3 (2018): 490–510. http://dx.doi.org/10.1017/pab.2018.23.

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Abstract (sommario):

AbstractThe placement of angiosperms and Gnetales in seed plant phylogeny remains one of the most enigmatic problems in plant evolution, with morphological analyses (which have usually included fossils) and molecular analyses pointing to very distinct topologies. Almost all morphology-based phylogenies group angiosperms with Gnetales and certain extinct seed plant lineages, while most molecular phylogenies link Gnetales with conifers. In this study, we investigate the phylogenetic signal present in published seed plant morphological data sets. We use parsimony, Bayesian inference, and maximum-

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41

Rajanikanth, A. "Diversification and evolution of Early Cretaceous East Coast flora of India." Journal of Palaeosciences 45 (December 31, 1996): 369–77. http://dx.doi.org/10.54991/jop.1996.1257.

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Abstract (sommario):

The Early Cretaceous continental sediments in the East Coast of India are characterized by the Ptilophyllum flora. Interplay of tectonism and sedimentation caused plant fossil preservation in different unconnected paralic deposits distributed in Cauvery, Palar, Krishna-Godavari and Mahanadi basins and in the associated Pranhita-Godavari Graben. Plant megafossils assigned to pteridophytes, pteridosperms, cycadophytes, Taxales, Ginkgoales and Coniferales are variously distributed in these basins. Differential preservation of plant parts denotes an incomplete evolutionary pattern. Variation withi

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42

Hill, Robert S., and Tim J. Brodribb. "Southern Conifers in Time and Space." Australian Journal of Botany 47, no. 5 (1999): 639. http://dx.doi.org/10.1071/bt98093.

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Abstract (sommario):

The three southern conifer families, Araucariaceae, Cupressaceae and Podocarpaceae, have a long history and continue to be an important part of the vegetation today. The Araucariaceae have the most extensive fossil record, occurring in both hemispheres, and with Araucaria in particular having an ancient origin. In the Southern Hemisphere Araucaria and Agathis have substantial macrofossil records, especially in Australasia, and Wollemia probably also has an important macrofossil record. At least one extinct genus of Araucariaceae is present as a macrofossil during the Cenozoic. Cupressaceae mac

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43

Greenwood, David R., Kathleen B. Pigg, James F. Basinger, and Melanie L. DeVore. "A review of paleobotanical studies of the Early Eocene Okanagan (Okanogan) Highlands floras of British Columbia, Canada, and Washington, USA." Canadian Journal of Earth Sciences 53, no. 6 (2016): 548–64. http://dx.doi.org/10.1139/cjes-2015-0177.

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Abstract (sommario):

The history of plant fossil collecting in the Okanagan (Okanogan) Highlands of British Columbia and northeastern Washington is closely intertwined with the history of geological surveys and mining activities from the 1870s onward. The first descriptions of fossil plants from British Columbia were published in 1870–1920 by J.W. Dawson, G.M. Dawson, and D.P. Penhallow. In the United States, fossil leaves and fish were first recognized at Republic, Washington, by miners in the early 1900s. Many early workers considered these floras to be of Oligocene or Miocene age. C.A. Arnold described Canadian

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44

Donovan, Michael P., Peter Wilf, Ari Iglesias, N. Rubén Cúneo, and Conrad C. Labandeira. "Insect herbivore and fungal communities on Agathis (Araucariaceae) from the latest Cretaceous to Recent." PhytoKeys 226 (May 26, 2023): 109–58. http://dx.doi.org/10.3897/phytokeys.226.99316.

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Abstract (sommario):

Agathis (Araucariaceae) is a genus of broadleaved conifers that today inhabits lowland to upper montane rainforests of Australasia and Southeast Asia. A previous report showed that the earliest known fossils of the genus, from the early Paleogene and possibly latest Cretaceous of Patagonian Argentina, host diverse assemblages of insect and fungal associations, including distinctive leaf mines. Here, we provide complete documentation of the fossilized Agathis herbivore communities from Cretaceous to Recent, describing and comparing insect and fungal damage on Agathis across four latest Cretaceo

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45

Donovan, Michael P., Peter Wilf, Ari Iglesias, N. Rubén Cúneo, and Conrad C. Labandeira. "Insect herbivore and fungal communities on Agathis (Araucariaceae) from the latest Cretaceous to Recent." PhytoKeys 226 (May 26, 2023): 109–58. https://doi.org/10.3897/phytokeys.226.99316.

Testo completo

Abstract (sommario):

Agathis (Araucariaceae) is a genus of broadleaved conifers that today inhabits lowland to upper montane rainforests of Australasia and Southeast Asia. A previous report showed that the earliest known fossils of the genus, from the early Paleogene and possibly latest Cretaceous of Patagonian Argentina, host diverse assemblages of insect and fungal associations, including distinctive leaf mines. Here, we provide complete documentation of the fossilized Agathis herbivore communities from Cretaceous to Recent, describing and comparing insect and fungal damage on Agathis across four latest Cretaceo

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46

Seyfullah, Leyla J., Mario Coiro, Vivi Vajda, Stephen McLoughlin, and Margret Steinthorsdottir. "Detection of in situ resinous traces in Jurassic conifers from floras lacking amber." Fossil Imprint 80, no. 1 (2024): 68–76. http://dx.doi.org/10.37520/fi.2024.007.

Testo completo

Abstract (sommario):

Amber deposits are rare in Jurassic successions, occurring in small quantities, whereas Lower Cretaceous strata host many substantial and commonly fossiliferous amber deposits worldwide. Minor amounts of Early Jurassic amber have been reported from Italy, and small amounts of Late Jurassic amber are known from Lebanon, Jordan and Thailand. Other Jurassic amber deposits that require reinvestigation of their age and provenance have also been reported from Denmark and France. Few of these amber deposits contain fossils, the others lack inclusions, suggesting a ‘Jurassic amber gap’ in the fossil r

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47

Kustatscher, Evelyn, Giovanni G. Scanu, Jiří Kvaček, and Johanna H. A. Van Konijnenburg-van Cittert. "The Krasser collection In the Faculty of Sciences, Charles University, Prague – New insights into the Middle Jurassic flora of Sardinia." Fossil Imprint 72, no. 3-4 (2016): 140–54. http://dx.doi.org/10.14446/fi.2016.140.

Testo completo

Abstract (sommario):

Revision of part of the Middle Jurassic flora of Sardinia, the Krasser collection, stored in Prague (Lovisato B collection), containing 23 fossil taxa of horsetails, ferns, cycadophytes, ginkgophytes and conifers. The conifers are most diverse, followed by cycadophytes and ferns. The composition of this assemblage differs notably from the Lovisato collection stored in Cagliari, suggesting that it might derive from a different stratigraphic level and/or palaeoenvironment. The palaeodiversity of the Middle Jurassic flora of Sardinia increases to 46 fossil taxa with this revision. Cycadolepis sp.

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48

Ríos-Santos, César, and Sergio R. S. Cevallos-Ferriz. "Upper Jurassic, Upper Cretaceous and Palaeocene conifer woods from Mexico." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 108, no. 4 (2017): 399–418. http://dx.doi.org/10.1017/s1755691018000245.

Testo completo

Abstract (sommario):

ABSTRACTAlthough there are reports of permineralised woods in Mesozoic and Cenozoic strata in Mexico, there are few palaeobotanical studies based on coniferous stems. Four taxa of fossil wood from three localities in Mexico are described at the anatomical level and identified taxonomically based on detailed comparisons with woods of extant and fossil taxa. Agathoxylon gilii sp. nov. and A. jericonse sp. nov. are determined from the Todos Santos Formation (Upper Jurassic), in Chiapas; A. parrensis sp. nov. is described from the Las Encinas Formation (Palaeocene) in Coahuila; and Taxodioxylon ca

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49

Uhl, Dieter, and André Jasper. "Charred conifer remains from the Late Oligocene – Early Miocene of Northern Hesse (Germany)." Acta Palaeobotanica 58, no. 2 (2018): 175–84. http://dx.doi.org/10.2478/acpa-2018-0012.

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Abstract (sommario):

AbstractFire is an important constituent of many modern and fossil ecosystems. During the last decades a large number of studies have dealt with fires in pre-Cenozoic ecosystems. Evidence for the occurrence of Palaeogene and Neogene wildfires (e.g. in the form of pyrogenic inertinites in lignite deposits) is geographically and stratigraphically widespread. However, as compared to earlier periods (i.e. the Permian and Cretaceous), fewer studies have focussed so far on plants burnt (or charred) in wildfires from these periods, even though these periods are of considerable interest for our unders

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50

Royer, Dana L., Kylen M. Moynihan, Melissa L. McKee, Liliana Londoño, and Peter J. Franks. "Sensitivity of a leaf gas-exchange model for estimating paleoatmospheric CO<sub>2</sub> concentration." Climate of the Past 15, no. 2 (2019): 795–809. http://dx.doi.org/10.5194/cp-15-795-2019.

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Abstract (sommario):

Abstract. Leaf gas-exchange models show considerable promise as paleo-CO2 proxies. They are largely mechanistic in nature, provide well-constrained estimates even when CO2 is high, and can be applied to most subaerial, stomata-bearing fossil leaves from C3 taxa, regardless of age or taxonomy. Here we place additional observational and theoretical constraints on one of these models, the “Franks” model. In order to gauge the model's general accuracy in a way that is appropriate for fossil studies, we estimated CO2 from 40 species of extant angiosperms, conifers, and ferns based only on measureme

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