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Artigos de revistas sobre o tema "Orthocerida"

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Publicado: 26 de julho de 2024

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1

Kröger, B., e M. Isakar. "Revision of annulated orthoceridan cephalopods of the Baltoscandic Ordovician". Fossil Record 9, n.º 1 (1 de fevereiro de 2006): 137–63. http://dx.doi.org/10.1002/mmng.200600005.

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Abstract. The annulated orthoceridans of the Middle and Late Ordovician of Baltoscandia are described and their systematic frame is revised. The revision of these nautiloids, which are part of the Orthocerida and Pseudorthocerida, is based on the investigation of characters of the septal neck, the siphuncular tube, and the apex. An unequivocal terminology of these characters is suggested and applied. The shape of the septal neck and the siphuncular tube are described for the first time in Palaeodawsonoceras n. gen., Striatocycloceras n. gen., Dawsonoceras fenestratum Eichwald, 1860, and Gorbyoceras textumaraneum (Roemer, 1861). Ctenoceras sweeti n. sp. is erected. The apex of Dawsonoceras barrandei Horný, 1956 is figured and described for the first time. The distribution of the character states of the apex and the septal neck support the emendation of the families Orthoceratidae, Dawsonoceratidae, and Proteoceratidae. The analysis shows also that the families Kionoceratidae, and Leuroceratidae must be refused because they represent not natural groups. However, it is also shown that the present knowledge is not sufficient to establish an unequivocal classification of the Middle, and Late Ordovician annulate cephalopods. Die orthoceriden Cephalopoden des Mittleren bis Späten Ordoviziums im Baltoskandium werden beschrieben und revidiert. Die Revision dieser Cephalopoden, welche zu den Orthocerida und Pseudorthocerida gehören, stützt sich auf die Untersuchung der Apikalenden, der Septalduten und der Form der Siphonalröhre. Eine eindeutige Terminologie für diese Merkmale wird vorgeschlagen und angewandt. Die Form der Septalduten und der Siphonalröhre von Palaeodawsonoceras n. gen., Striatocycloceras n. gen., Dawsonoceras fenestratum, Eichwald, 1860 und Gorbyoceras textumaraneum (Roemer, 1861) wird erstmals beschrieben. Die Art Ctenoceras sweeti n. sp. wird aufgestellt. Der Apex von Dawsonoceras barrandei Horný, 1956 wird erstmals beschrieben und dargestellt. Die neu gefundenen Merkmale stützen eine Emendation der Familien Orthoceratidae, Dawsonoceratidae und Proteoceratidae. Es wird daher dafür plädiert, die Familien Kionoceratidae (Hyatt, 1900) und Leuroceratidae (Sweet, 1964) nicht mehr zu verwenden, da diese keine natürlichen Gruppen repräsentieren. Die Untersuchung zeigt aber auch, dass es derzeit noch nicht möglich ist die annulaten Cephalopoden des Mittleren und Oberen Ordoviziums zweifelsfrei zu klassifizieren. doi:10.1002/mmng.200600005

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2

Kröger, Björn, Matilde S. Beresi e Ed Landing. "Early orthoceratoid cephalopods from the Argentine Precordillera (Lower-Middle Ordovician)". Journal of Paleontology 81, n.º 6 (novembro de 2007): 1266–83. http://dx.doi.org/10.1666/06-013.1.

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The Early and Middle Ordovician Orthocerida and Lituitida of Precordilleran Argentina are described, and their systematics and paleogeographic significance are revised. These cephalopods show a strong affinity to coeval faunas of North China, suggesting a location of the Precordillera at middle latitudes in the Southern Hemisphere east of the North China block and relatively close to the Gondwanan margin during the early Middle Ordovician. The descriptive terminology of characters of the septal necks, the position and shape of the siphuncule, and the shape of the connecting ring is improved. The distribution of these characters support an emendation of the Baltoceratidae, Sactorthoceratidae, and Proteoceratidae. Braulioceras n. gen. (Sactorthoceratidae) and Palorthoceras n. gen. (Orthoceratidae) are erected. The new species Braulioceras sanjuanense, Eosomichelinoceras baldisii, Gangshanoceras villicumense, and Rhynchorthoceras minor are proposed. Palorthoceras n. gen. from the Lower Ordovician Oepikodus evae Zone represents the earliest known orthocerid.

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3

Kröger, Björn. "Large shell injuries in Middle Ordovician Orthocerida (Nautiloidea, Cephalopoda)". GFF 126, n.º 3 (setembro de 2004): 311–16. http://dx.doi.org/10.1080/11035890401263311.

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4

Mutvei, Harry. "Siphuncular structures in Calciosiphonate nautiloid orders Actinocerida, Orthocerida and Barrandeocerida (Cephalopoda)". GFF 138, n.º 2 (4 de março de 2016): 295–305. http://dx.doi.org/10.1080/11035897.2015.1123768.

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5

NIKO, Shuji, Masatoshi SONE e Mohd Shafeea LEMAN. "A new Permian species of Mooreoceras (Cephalopoda: Orthocerida) from northwestern Peninsular Malaysia". Proceedings of the Japan Academy, Series B 81, n.º 8 (2005): 329–33. http://dx.doi.org/10.2183/pjab.81.329.

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6

Niko, Shuji, Masatoshi Sone e Mohd Shafeea Leman. "Ordovician Orthocerida and Pseudorthocerida (Cephalopoda: Nautiloidea) from the Lower Setul Limestone of the Langkawi Islands, Malaysia". Journal of Systematic Palaeontology 18, n.º 5 (3 de julho de 2019): 381–414. http://dx.doi.org/10.1080/14772019.2019.1608599.

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7

Kröger, B., e D. H. Evans. "Review and palaeoecological analysis of the late Tremadocian – early Floian (Early Ordovician) cephalopod fauna of the Montagne Noire, France". Fossil Record 14, n.º 1 (1 de fevereiro de 2011): 5–34. http://dx.doi.org/10.5194/fr-14-5-2011.

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The Early Ordovician successions of the southern Montagne Noire consist of a thick sequence of predominantly siliciclastic sediments of which the late Tremadocian St. Chinian Formation and the earliest Floian La Maurerie Formation contain a comparatively rich and abundant cephalopod association. The cephalopods of the St. Chinian and La Maurerie Formation are interpreted as generally authochthonous, representing a fauna which originally lived in the open water above the sediments or related to the sea bottom. The cephalopod associations of the St. Chinian and La Maurerie formations are similar to other contemporaneous assemblages known from higher palaeolatitudes and associated with deeper depositional settings. They are composed almost exclusively of longiconic orthocones, in this case predominantly of eothinoceratids and baltocerids. The occurrences of <i>Annbactrocera</i>, and <i>Bactroceras</i> in the St. Chinian Formation are at present the earliest unambiguous reports of the Orthocerida. The available data suggest an initial expansion of orthoceroid cephalopod faunas from open water habitats of high paleo-latitudes, and a subsequent expansion on the carbonate platforms during the Floian. The presence of the eothinoceratid <i>Saloceras</i> in abundance demonstrates the Gondwanan affinity of the assemblage whilst adding further support for the presence of a "<i>Saloceras realm</i>" that may have extended along the margins of East and West Gondwana at least into intermediate latitudes. The following new taxa are proposed: <i>Annbactroceras</i> n. gen., <i>Annbactroceras felinense</i> n. sp., <i>Cyclostomiceras thorali</i> n. sp., <i>Felinoceras</i> n. gen., <i>Felinoceras constrictum</i> n. sp., <i>Lobendoceras undulatum</i> n. sp., Rioceratidae n. fam., <i>Saloceras murvielense</i> n. sp., <i>Thoraloceras</i> n. gen., <i>Thoraloceras bactroceroides</i> n. sp. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.201000013" target="_blank">10.1002/mmng.201000013</a>

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8

Crick, Rex E. "The biogeographic nature of Paleozoic nautiloid cephalopods". Paleontological Society Special Publications 6 (1992): 75. http://dx.doi.org/10.1017/s2475262200006353.

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The historical and prevailing view regarding the distribution of nautiloid cephalopods is one of cosmopolitanism. There are several objections to such a sweeping view of this major group of marine invertebrates, but only the most significant are addressed here. First, unlike endemism, there is no clear agreement on the meaning of the term cosmopolitanism as used in biogeography. It is thus extremely difficult to gain a historical perspective without access to original data. I have found the term used for as few as four occurrences on four modern landmasses without reference to the paleogeographic relationships of these landmasses. Second, while a few nautiloid groups did compile impressive dispersal statistics, the fossil record clearly reveals that such periods of dispersal were generally brief in geological terms and that the group or groups involved did not colonize all available landmasses. Third, nautiloids were incapable of developing cosmopolitan distributions unless climatic constraints were removed by changes in the global system or by positioning all landmasses within the sub-tropical to tropical latitudes. Since there is no convincing evidence that either event occurred during the 520 million years of nautiloid evolution, it is perhaps more appropriate to view the distribution of nautiloids in terms of the number of landmasses colonized relative to the number of landmasses available for colonization. For nautiloids, the number of landmasses available for colonization was always fewer than the number of landmasses comprising the global paleogeography during any one slice of geologic time. Nautiloid genera restricted to one landmass are considered endemic, a condition exhibited by 65% of the Ordovician and Silurian genera and 81% of the Devonian genera. The maximum number of landmasses colonized by any one nautiloid genus for any one particular period of time was four, two fewer than the six available landmasses.The basic biogeographic unit for nautiloid cephalopods is the genus. This is so because the dispersive potential of nautiloids was low when compared with true pelagic groups such as conodonts. Thus for nautiloid groups capable of dispersal among landmasses, the time needed to effect dispersal and insure permanence in the stratigraphic record was something greater than the longevity of the typical nautiloid species but less than the longevity of most genera. It seems reasonable that the best chance for the occurrence of cosmopolitan nautiloid genera would be at or near the zenith of those groups with attributes most suitable for dispersal. However, the fossil record for nautiloids shows that such periods rarely coincide with the peak intervals of total nautiloid diversity for the Lower and Middle Paleozoic (Arenig, Wenlock and Eifelian) occurring instead during succeeding intervals of time. Such events are generally confined to periods of modal diversity within each group. The lowest percentages of endemic genera and the intervals in which they occurred for the major nautiloid groups are: Ellesmerocerida (57%) and Endocerida (60%) for the Llanvirn, Actinocerida (36%) and Tarphycerida (45%) in the Llandeilo, Orthocerida (52%, 47%, 55%) and Oncocerida (66%, 66%, 75%) for the Caradoc, Ludlow, and Givetian, Discosorida (67%) in the Wenlock and Nautilida (62%) for the Givetian. While the low percentage of endemics for the Actinocerida and Tarphycerida translate into the highest percentages of genera found on more than three separate landmasses (20%), similar percentages of endemics for the Orthocerida do not. Nonendemic members of the Orthocerida are more common to two or three of the available landmasses with approximately 20% occurring in either of these configurations. The fossil record also shows that Devonian nautiloids were the most restricted with the majority occurring on no more than two landmasses.These and other criteria indicate that the distributions of nautiloid cephalopods do not conform to the general perception of cosmopolitanism. At the generic level the group is largely endemic with reasonably large numbers of genera occurring on two or three landmasses with no genus occurring on all available landmasses during a given interval of time. Because of the type and manner of biogeographic barriers imposed on nautiloids, their distributions or patterns tend to have well defined limits with considerable predictive powers.

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9

Frey, Robert C. "Paleoecology of a well-preserved nautiloid assemblage from a Late Ordovician shale unit, southwestern Ohio". Journal of Paleontology 63, n.º 5 (setembro de 1989): 604–20. http://dx.doi.org/10.1017/s0022336000041238.

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A diverse, well-preserved assemblage of nautiloid cephalopods was collected from the Treptoceras duseri shale, a 1.5-m-thick claystone within the Waynesville Formation (Late Ordovician, early Richmondian) exposed in southwest Ohio. The strata, the enclosed fauna, and its taphonomy indicate deposition in a low-energy, mud-bottom marine environment, in water depths of 20–25 m, below wave base but within the zone of storm-current reworking.Nautiloid specimens consist of complete conchs that have been replaced by calcite. Twelve species of nautiloids, belonging to eight genera, representative of four orders, have been collected from the shale in southwest Ohio. Longiconic orthocones are clearly the dominant nautiloid morphotype present, with the assemblage dominated by three species of the longiconic orthocerid Treptoceras and with fewer numbers of the endocerid Cameroceras and the slender orthocerid Isorthoceras?, the cyrtoconic oncocerids Oncoceras and Manitoulinoceras, and rare specimens of the orthocerid Gorbyoceras, the oncocerid Zittelloceras, and the ascocerid Schuchertoceras.Nautiloid taphonomy, the diversity of nautiloid taxa present, the lack of postmortem buoyancy in the shells of the more common taxa, the recurrent nature of this assemblage, and the restricted distribution of this Treptoceras–Cameroceras fauna to portions of eastern North America in the Late Ordovician suggest that this nautiloid assemblage represents an in-situ accumulation of nautiloids representative of a living assemblage. These nautiloids were important elements associated with benthic communities in these epeiric sea mud-bottom environments and not simply assemblages of drifted, necroplanktonic shells.

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10

Revets, Stefan A. "The generic revision of the Reussellids (Foraminiferida)". Journal of Micropalaeontology 10, n.º 1 (1 de agosto de 1991): 1–15. http://dx.doi.org/10.1144/jm.10.1.1.

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Abstract. The study of the apertural complex in the type species of the reussellid genera leads to a reassessment of the classification of these taxa. The genus Reussella has so many characteristics in common with Bulimina that it is reclassified in the Buliminidae. The family Trimosinidae is retained and redescribed to contain the genera Trimosina, Mimosina and Fijiella only. Pyramidina is retained in the Turrilinidae on account of the praebulimine toothplate.The absence of an internal toothplate and the very un-bulimine apertural face in Bifarinella, Chrysalidinella, Cifellia, Finlayina, Orthocerina, Pavonina and Valvohifarina species is the main argument to remove these genera from the Buliminacea and reclassify them in the superfamily Pavoninacea herein proposed.The genus Orthocerina d’Orbigny, 1839 is reinstated and shown to be closely related to Chrysalidinella and Cifellia.The genus Compressigerina is reclassified in the Uvigerinidae, close to Trifarina because of the presence of an apertural neck with toothplate.

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11

Niko, Shuji. "Kobayashiceras gifuense, a new actinocerid cephalopod from the Lower Devonian of Japan". Journal of Paleontology 72, n.º 1 (janeiro de 1998): 36–38. http://dx.doi.org/10.1017/s0022336000024008.

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A new actinocerid genus, Kobayashiceras, is defined on the basis of Kobayashiceras gifuense new species from the Lochkovian (Early Devonian) of the Fukuji Formation, central Japan. This genus shares with known actinocerids in the apical shell morphology, but is diagnosed by its orthocerid like stenosiphonate form in the adoral shell. Its taxonomic and paleobiogeographic implications are discussed.

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12

KRÖGER, B., e R. H. MAPES. "REVISION OF SOME COMMON CARBONIFEROUS GENERA OF NORTH AMERICAN ORTHOCERID NAUTILOIDS". Journal of Paleontology 79, n.º 5 (setembro de 2005): 1002–11. http://dx.doi.org/10.1666/0022-3360(2005)079[1002:rosccg]2.0.co;2.

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13

BAI, XIA, e HOUHUN LI. "Taxonomic review of the genus Herpystis Meyrick, 1911 (Lepidoptera, Tortricidae) from China, with descriptions of four new species". Zootaxa 4590, n.º 3 (29 de abril de 2019): 382. http://dx.doi.org/10.11646/zootaxa.4590.3.4.

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Five species of Herpystis Meyrick, 1911 are reported from China, four of which species are described as new: H. densisetosa, sp. nov.; H. medispinata, sp. nov.; H. arcisaccula, sp. nov.; and H. orthocera, sp. nov. Herpystis mica Kuznetzov, 1988 is newly recorded in China. Photographs of adults and genitalia are provided, along with a key to the Chinese species.

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14

Dernov, Vitaly. "New finds of the Carboniferous cephalopods on the territory of Ukraine". Visnyk of V.N. Karazin Kharkiv National University, series Geology. Geography. Ecology, n.º 55 (1 de dezembro de 2021): 72–81. http://dx.doi.org/10.26565/2410-7360-2021-55-05.

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Formulation of the problem. Carboniferous sediments are widespread in Ukraine. Cephalopods remains are not rare in these deposits. However, they are poorly studied. Cephalopods have great importance for the dismemberment and correlation of Carboniferous sediments, as well as for paleogeographic reconstructions. For this reason, their study is very relevant. The history of the study. Mississippian cephalopods of the Donets Basin and Don-Dnipro Downwarp are poorly studied. At the moment, few ammonoids and one nautilid have been determined from the Mississippian of the Don-Dnipro Downwarp. Numerous Mississippian ammonoids are known from the Donets Basin. Nautilids are known only from the Samara Formation (Lower Serpukhovian). Material and research methods. This article is based on the results of a study of Mississippian cephalopods collection from the Donets Basin (Ukraine: Grabove Village and Dokuchayivs’k in the south of the Donetsk Region) and the Don-Dnipro Downwarp (Ukraine: Sumy and Poltava Regions, Bugrovate and Gubs’ke Villages). In addition, allochthonous remains of cephalopods from the moraine of the Dnipro glacial maximum were studied (Ukraine: Poltava Region, Pyvykha Hill nearby Hradyzk Town). Statement of the main material. Orthocerids, oncocerid Culullus sp., actinocerid Antonoceras balaschovi Shimansky, nautilids Pseudostenopoceras sp. and Liroceras sp. have identified from the limestone boulders in the moraine of the Dnipro glacial maximum (Hradyzk). The age of these limestones from the Late Viséan to Serpukhovian. The geographical origin of the limestone debris can be determined by studying the fossils in these rocks. The results of the study of chaetetids and corals (Victor Ohar), brachiopods (Vladystav Poletaev) and cephalopods (author) show that the source of the limestone boulders with Carboniferous fossils situated in the southern part of the Moscow Syneclise. Fragments of conchs of the orthocerids Brachycycloceras scalare (Archiac et Verneuil) are occurred in the black mudstones of the Upper Viséan opened by the boreholes Bugrovativs’ka-160 (depth is 3650.0-3654.0 metres; Bugrovate Village, Okhtyrka District, Sumy Region) and Gubs’ka-2 (depth is 4740.0-4745.0 metres; Gubs’ke Village, Lubny District, Poltava Region). This species is known from the Namurian of Belgium, Viséan of the Czech Republic and Poland and Mississippian of Germany. The collection also contains a fragment of a large conch of actinocerid Rayonnoceras sp. This specimen comes from the limestone B81 of the Mezha Formation (Upper Viséan) exposed in the vicinity of the Grabove Village on the Kalmius River (Donetsk Region). This genus is very widespread in the Mississippian sediments of North America, Western Europe, European part of Russia and China. Previously actinocerids in the Carboniferous of the Donets Basin were not known. Fragments of conchs of indeterminate orthocerids find in the dark gray fine-crystalline Viséan limestones (Dokuchayivs’k, borehole no. 51, depth is 88.0 metres). Conclusions. The study of new finds of Carboniferous cephalopod remains in Ukraine allowed us to confirm the approximate location of the source of the clastic material of the Dnipro glacial maximum moraine. In addition, expand the systematic diversity of the Mississippian cephalopods of the Donets Basin and Don-Dnipro Downwarp.

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15

Manda, Š., e V. Turek. "Colour patterns on Silurian orthocerid and pseudorthocerid conchs from Gotland – palaeoecological implications". Estonian Journal of Earth Sciences 64, n.º 1 (2015): 74. http://dx.doi.org/10.3176/earth.2015.13.

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16

Niko, Shuji, Masatoshi Sone e Mohd Shafeea Leman. "Two new species of orthocerid cephalopods from the Carboniferous Panching Limestone, West Malaysia". Paleontological Research 11, n.º 4 (dezembro de 2007): 331–36. http://dx.doi.org/10.2517/1342-8144(2007)11[331:tnsooc]2.0.co;2.

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17

Mutvei, Harry, e Royal H. Mapes. "Carboniferous coleoids with mixed coleoid-orthocerid characteristics: a new light on cephalopod evolution". GFF 140, n.º 1 (2 de janeiro de 2018): 11–24. http://dx.doi.org/10.1080/11035897.2018.1429490.

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18

TENG, KAIJIAN, e SHUXIA WANG. "Taxonomic study of the genus Hypatopa Walsingham, 1907 (Lepidoptera: Blastobasidae) in China, with descriptions of five new species". Zootaxa 4609, n.º 2 (23 de maio de 2019): 343. http://dx.doi.org/10.11646/zootaxa.4609.2.9.

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The eight species of the genus Hypatopa Walsingham, 1907 recorded from China are reviewed, five of which are described as new: H. biprojecta, sp. nov.; H. weibaoshana, sp. nov.; H. apicirecta, sp. nov.; H. huayingshana, sp. nov.; and H. orthocera, sp. nov. Hypatopa moriutiella Sinev, 1986 and H. binotella (Thunberg, 1794) are recorded for the first time from China. Photographs of adults and genitalia are provided. A key to the Chinese species and a map showing the distribution of these species are included.

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19

Kröger, Björn. "Early growth-stages and classification of orthoceridan Cephalopods of the Darriwillian (Middle Ordovician) of Baltoscandia". Lethaia 39, n.º 2 (junho de 2006): 129–39. http://dx.doi.org/10.1080/00241160600623749.

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20

Niko, Shuji, Barbara Seuss e Royal H. Mapes. "Desmoinesian (Middle Pennsylvanian) Orthocerid Cephalopods from the Buckhorn Asphalt Lagerstätte in Oklahoma, Midcontinent North America". Paleontological Research 22, n.º 1 (janeiro de 2018): 20–36. http://dx.doi.org/10.2517/2017pr008.

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21

Mutvei, Harry, e Royal H. Mapes. "Carboniferous orthocerid-like coleoid Mitorthoceras with unique shell structure (new order Tuborthocerida, Coleoidea, Cephalopoda); comparison with bactritid-like coleoid Shimanskya". GFF 141, n.º 2 (3 de abril de 2019): 121–32. http://dx.doi.org/10.1080/11035897.2019.1572218.

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22

LI, JIAN YONG, JIE LIU e JIAN CHEN. "A review of some Neriene spiders (Araneae, Linyphiidae) from China". Zootaxa 4513, n.º 1 (5 de novembro de 2018): 1. http://dx.doi.org/10.11646/zootaxa.4513.1.1.

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The genus Neriene Blackwall, 1833 from China is reviewed. Two new species are described: Neriene lushanensis n. sp., Neriene orthocera n. sp. Ketambea liupanensis (Tang & Song, 1992) n. comb. and Ketambea nigripectoris (Oi, 1960) n. comb. are transferred from the genus Neriene. Nineteen known species are redescribed or diagnosed and discriminated from related species: Neriene aquilirostralis Chen & Zhu, 1989, Neriene birmanica (Thorell, 1887), Neriene calozonata Chen & Zhu, 1989, Neriene cavaleriei (Schenkel, 1963), Neriene clathrata (Sundevall, 1830), Neriene compta Zhu & Sha, 1986, Neriene decormaculata Chen & Zhu, 1988, Neriene emphana (Walcknear, 1841), Neriene hammeni (Van Helsdingen, 1963), Neriene japonica (Oi, 1960), Neriene limbatinella (Bosenberg & Strand, 1906), Neriene longipedella (Bosenberg & Strand, 1960), Neriene macella (Thorell, 1898), Neriene nitens Chen & Zhu, 1991, Neriene oidedicata (Van Helsdingen, 1969), Neriene poculiforma Liu & Chen, 2010, Neriene radiata (Walckenear, 1841), Neriene strandia (Blauvelt, 1936), and Neriene zhui Chen & Li, 1995.

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23

MANDA, ŠTĚPÁN, PETR ŠTORCH, LADISLAV SLAVÍK, JIŘÍ FRÝDA, JIŘÍ KŘÍŽ e ZUZANA TASÁRYOVÁ. "The graptolite, conodont and sedimentary record through the late Ludlow Kozlowskii Event (Silurian) in the shale-dominated succession of Bohemia". Geological Magazine 149, n.º 3 (6 de outubro de 2011): 507–31. http://dx.doi.org/10.1017/s0016756811000847.

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AbstractThe shale-dominated hemipelagic succession exposed in the southwestern part of the Prague Synform preserves the most complete Ludfordian graptolite record so far encountered from peri-Gondwanan Europe. Four graptolite biozones – theNeocucullograptus inexpectatus,Nc. kozlowskii,Pseudomonoclimacis latilobus–Slovinograptus balticusandPristiograptus fragmentalisbiozones – are recognized in the middle and late Ludfordian, between theBohemograptus tenuisBiozone and the base of the Pridoli Series. Conodont occurrences are restricted to scattered limestone beds, but enable tentative integration of the graptolite and conodont biozonal schemes. Particular attention was paid to faunal and sedimentary changes and the carbon isotope record across the middle Ludfordian Kozlowskii extinction Event. The Kozlowskii Event caused the almost simultaneous extinction of graptolites with ventrally curved rhabdosomes. The generaBohemograptus,PolonograptusandNeocucullograptus, along withPseudomonoclimacis dalejensis, disappeared from the fossil record. The offshore conodont fauna recorded in the section was not strongly affected and similarly the pelagic orthocerids and nektonicCeratiocarispassed unaffected through the extinction interval. The abundant and widespread pelagic myodocopid ostracodEntomis, however, became extinct. The late Ludfordian graptolite recovery gave origin to a novel fauna of Pridoli type from taxa that emerged or just reappeared above the Kozlowskii crisis. In Všeradice and elsewhere in the Prague Synform, the recovery, manifested by the appearance ofPseudomonoclimacis latilobusandSlovinograptus balticus, closely postdates the end of the isotope excursion but pre-dates the first appearance of the conodont index ‘Ozarkodina’snajdri. Here the graptolite recovery was delayed relative to the recovery of the benthic fauna. A canalized intraformational limestone conglomerate corresponds with a gap in the sedimentary record above the Kozlowskii extinction and just below the graptolite recovery. The benthic faunas from the conglomerate matrix and pebbles permit correlation with the shallower part of the basin indicating a distinct fall in sea-level. The present data demonstrate the coincidence of the graptolite crisis with benthic faunal change and eustatic fall in sea-level manifested by facies change and the carbon isotope excursion.Polonograptus chlupacisp. nov., from theNc. kozlowskiiBiozone, is described and several other graptolite taxa are redescribed.

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Doguzhaeva, Larisa A. "Siphonal tube structure of the Late Devonian orthocerid Dolorthoceras from the Polar Urals (NW Russia) preserving nacre and organic fibres as well as its persistence in cephalopod evolution". Swiss Journal of Palaeontology 138, n.º 1 (março de 2019): 37–47. http://dx.doi.org/10.1007/s13358-019-00188-2.

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Silfverberg, H. "Colydiidae Erichson, 1842 (Insecta, Coleoptera): proposed precedence over Cerylonidae Billberg, 1820 and Orthocerini Blanchard, 1845 (1820); and Cerylon Latreille, 1802: proposed conservation of Lyctus histeroides Fabricius, 1792 as the type species". Bulletin of zoological nomenclature. 51 (1994): 17–20. http://dx.doi.org/10.5962/bhl.part.7145.

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FERRER-SUAY, MAR, JORDI PARETAS-MARTÍNEZ, JESÚS SELFA e JULI PUJADE-VILLAR. "Taxonomic and synonymic world catalogue of the Charipinae and notes about this subfamily (Hymenoptera: Cynipoidea: Figitidae)". Zootaxa 3376, n.º 1 (4 de julho de 2012): 1. http://dx.doi.org/10.11646/zootaxa.3376.1.1.

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The Charipinae (Cynipoidea: Figitidae) are a small group of Hymenoptera biologically characterized as being secondary parasitoids of aphids and psyllids (Hemiptera) (Menke & Evenhuis, 1991). A total of 281 species of Charipinae have been described since the first species was described by Westwood (1833) (including two fossils, one of them recently transferred in a new family, Protimaspidae). An updated world catalogue of the Charipinae is presented here, with 168 valid species: 111 included in Alloxysta Förster, 31 in Phaenoglyphis Förster, 13 in Dilyta Förster, 5 in Apocharips Fergusson, 4 in Thoreauana Girault, and 1 in Dilapothor Paretas-Martínez & Pujade-Villar, Lobopterocharips Paretas-Martínez & Pujade-Villar, Lytoxysta Kieffer and †Protocharips Kovalev. Eight species are considered as nomen nudum: Allotria fusca Dahlbom, 1842; Allotria thoreyi Dahlbom, 1842; Xystus xanthocephala Dahlbom, 1842; Allotria pusillina Giraud, 1877; Charips aphidiinaecida de Santis, 1937; Alloxysta keudelli Hedicke, 1927; Allotria amygdali Buckton, 1879 and Allotria polita Provancher, 1881. Six as nomen dubium: Allotria (Allotria) recticornis atra Kieffer, 1902; Allotria (Allotria) brevicornis Kieffer, 1902; Allotria (Allotria) orthocera Kieffer, 1902; Xystus femoralis Hartig, 1841; Charipsella laevigata Brèthes, 1913; Dilyta (Alloxysta) ignorata Kieffer, 1900. Three species are incertae sedis: Charips silvicola Belizin, 1928, Cynips atriceps Buckton, 1879 and Allotria (Allotria) testaceipes Kieffer, 1902. Two species are here synonymized: Alloxysta discreta (Förster, 1869) with A. ramulifera (Thomson, 1862) and A. megaptera (Cameron, 1889) with A. ruficollis (Cameron, 1883). Two species are raised from synonymy and considered here as valid species: Alloxysta cameroni (Cameron, 1883) and A. marshalliana (Kieffer, 1900). New names for species of Alloxysta are presented for homonimies with other Alloxysta species derived from the new combinations: Alloxysta ionescui Pujade-Villar & Ferrer-Suay new name for Alloxysta luteipes (Ionescu, 1969) n. comb., Alloxysta forshagei Pujade-Villar & Ferrer-Suay new name for Alloxysta bicolor (Ionescu, 1959) n. comb., and Alloxysta mattiasi Pujade-Villar & Ferrer-Suay new name for Alloxysta luteipes (Ionescu, 1959) n. comb. Also a new name to Phaenoglyphis is presented for the same reason before mentioned but without new combination: Phaenoglyphis hedickei Pujade-Villar & Ferrer-Suay new name for Phaenoglyphis longicornis Hedicke, 1928 and two new combinations are presented: Alloxysta rufa (Ionescu, 1959) n. comb and Alloxysta consobrina (Zetterstedt, 1838) Forshage n. comb. This catalogue includes: (i) a diagnosis of the subfamily with the most important taxonomic characters for species recognition, and illustrations of these characters; (ii) a key to genera; (iii) a list of all authors describing species of Charipinae; and (iv) a host table. The distribution of the Charipinae includes 106 Palaearctic species, 37 Nearctic, 11 Neotropical, 10 Afrotropical, 7 Oriental and 11 Australian. The species Alloxysta victrix (Westwood, 1833), A. fuscicornis (Hartig, 1841) and Phaenoglyphis villosa (Hartig, 1841) are cosmopolitan.

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LIU, TENGTENG, SHUXIA WANG e HOUHUN LI. "Review of the genus Argyresthia Hübner, [1825] (Lepidoptera: Yponomeutoidea: Argyresthiidae) from China, with descriptions of forty-three new species". Zootaxa 4292, n.º 1 (14 de julho de 2017): 1. http://dx.doi.org/10.11646/zootaxa.4292.1.1.

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The Chinese fauna of Argyresthia Hübner, [1825] included by 14 described species prior to this study. In the present paper we describe 43 new species and record seven species new to China. We also recognized six known Chinese species based on the available specimens; eight species previously reported for the fauna, but without available specimens for examination, are systematically placed in their relevant positions. The total species number of Argyresthia in China is brought to 64. The new species include: A. (Blastotere) aureola, sp. nov., A. (B.) sporadolepis, sp. nov., A. (B.) cineretra, sp. nov., A. (B.) affinicineretra, sp. nov., A. (B.) albaureola, sp. nov., A. (B.) densa, sp. nov., A. (B.) punctireticulata, sp. nov., A. (B.) dolichocoremata, sp. nov., A. (B.) longipenella, sp. nov., A. (Argyresthia) biloba, sp. nov., A. (A.) minutilepidota, sp. nov., A. (A.) flavifusca, sp. nov., A. (A.) trigonophylla, sp. nov., A. (A.) chiotorna, sp. nov., A. (A.) hirsuta, sp. nov., A. (A.) papillata, sp. nov., A. (A.) acuminata, sp. nov., A. (A.) curvativa, sp. nov., A. (A.) atomata, sp. nov., A. (A.) orthocera, sp. nov., A. (A.) cardiopetala, sp. nov., A. (A.) mala, sp. nov., A. (A.) longa, sp. nov., A. (A.) decurtata, sp. nov., A. (A.) minutisocia, sp. nov., A. (A.) scalprata, sp. nov., A. (A.) grammosacca, sp. nov., A. (A.) campylotropa, sp. nov., A. (A.) punctuata, sp. nov., A. (A.) chlorella, sp. nov., A. (A.) triangulata, sp. nov., A. (A.) subzonata, sp. nov., A. (A.) basistriata, sp. nov., A. (A.) longalbella, sp. nov., A. (A.) umbrina, sp. nov., A. (A.) umbrinistrigata, sp. nov., A. (A.) surrecta, sp. nov., A. (A.) lanosa, sp. nov., A. (A.) lata, sp. nov., A. (A.) cuprea, sp. nov., A. (A.) aurilata, sp. nov., A. (A.) convexa, sp. nov., and A. (A.) ellipsoidea, sp. nov. The newly record species include: A. (A.) pygmaeella ([Denis & Schiffermüller], 1775), A. (A.) retinella Zeller, 1839, A. (A.) angusta Moriuti, 1969, A. (A.) alpha Friese & Moriuti, 1968, A. (A.) beta Friese & Moriuti, 1968, A. (A.) kaoyaiensis Moriuti, 1982, and A. (A.) dislocata Meyrick, 1914. The male of A. (A.) trochaula Meyrick, 1938, and the male and female genitalia of A. (A.) aphoristis Meyrick, 1938 and A. (A.) dislocata are described for the first time. The misidentified species A. (A.) assimilis Moriuti, 1977 in China is described as A. (A.) mala, sp. nov. Argyresthia cryptomeriae Yang, nomen non rite publicatum, is validated as Argyresthia anthocephala Meyrick, 1936. Keys to the subgenera and to the Chinese species with available specimens are provided. Photos of adults and male and female genitalia are provided for all the examined species except two from Taiwan. Field photographs and biological information are provided where available. Five DNA barcode sequences of the two new species, A. (A.) surrecta, sp. nov. and A. (A.) lanosa, sp. nov., are provided for association of the sexes.

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Kröger, Björn. "The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden". European Journal of Taxonomy, n.º 41 (27 de março de 2013). http://dx.doi.org/10.5852/ejt.2013.41.

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The late Katian, Late Ordovician Boda Limestone of Dalarna, Sweden contains a rich cephalopod assemblage. The assemblage consists of 61 species, of 31 genera, comprising almost all major Ordovician cephalopod orders. Most common and diverse are the Orthocerida. The Ascocerida are also remarkably comman and diverse. The new ascocerid species, Redpathoceras bullatum sp. nov., R. depressum sp. nov., R. magnum sp. nov., and Probillingsites scandinavicum sp. nov., give reason to revise current hypotheses on the origin an evolution of this group. An ascocerid origin from barrandeoceratids or aspidoceratids is hypothesised. The absence of actinocerids in the Boda Limestone is notable, and is interpreted as an indication of relatively cool or/and deep depositional environments. The dominance of orthocerids is provisionally interpreted as evidence for nutrient-rich waters during the time of the deposition of the Boda Limestone. Additionally, the assemblage contains the new barrandeocerids Schuchertoceras fryi sp. nov., Siljanoceras varians gen. et sp. nov., Warburgoceras gen. nov. (for Cyrtoceras longitudinale Angelin in Angelin & Lindström, 1880), the new endocerid Cameroceras turrisoides sp. nov., the new oncocerid Cyrtorizoceras thorslundi sp. nov., and the new orthocerids Dawsonoceras stumburi sp. nov., Isorthoceras angelini sp. nov., I. curvilineatum sp. nov., Nathorstoceras adnatum gen. et sp. nov., N. kallholnense gen. et sp. nov., Palaeodawsonocerina? nicolletoides sp. nov., Pleurorthoceras osmundsbergense sp. nov., and Striatocycloceras isbergi sp. nov.

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Kröger, Björn, e Alexander Pohle. "Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen – a pelagic fauna with Laurentian affinities". European Journal of Taxonomy 783 (20 de dezembro de 2021). http://dx.doi.org/10.5852/ejt.2021.783.1601.

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The collection of cephalopods from eight sampling horizons within the Olenidsletta Member, Valhallfonna Formation, Floian–Dapingian, from Profilstranda and nearby Profilbekken, Ny Friesland, Spitsbergen, resulted in the detection of 31 species, 20 genera, and 12 families from the Ellesmerocerida, Endocerida, Riocerida, Dissidocerida, Orthocerida, Tarphycerida, and Oncocerida. Of these, five genera (Ethanoceras gen. nov., Hinlopoceras gen. nov., Nyfrieslandoceras gen. nov., Olenidslettoceras gen. nov., Svalbardoceras gen. nov.) and 19 species (Bactroceras fluvii sp. nov., Buttsoceras buldrebreenense sp. nov., Cycloplectoceras hinlopense sp. nov., Cyclostomiceras profilstrandense sp. nov., Deltoceras beluga sp. nov., Eosomichelinoceras borealis sp. nov., Ethanoceras solitudines gen. et sp. nov., Hemichoanella occulta sp. nov., Hinlopoceras tempestatis gen. et sp. nov., H. venti gen. et sp. nov., Lawrenceoceras ebenus sp. nov., L. larus sp. nov., Litoceras profilbekkenense sp. nov., Nyfrieslandoceras bassleroceroides gen. et sp. nov., Olenidslettoceras farmi gen. et sp. nov., Protocycloceras minor sp. nov., Proterocameroceras valhallfonnense sp. nov., Svalbardoceras sterna gen. et sp. nov., S. skua gen. et sp. nov.) are new. The diagnoses of the Cyptendoceratidae, Bactroceratidae and of Deltoceras Hyatt, 1894 are emended. Well preserved early growth stages in several species are remarkable. Turnover between the sampling horizons and between sampling intervals is high. The differences in composition, diversity and evenness of the assemblages are interpreted as reflecting changing depth and oxygenation depositional bottom conditions. The co-occurrence of endemic and cosmopolitan species is interpreted as resulting from a high vertical niche differentiation and from eustatically generated lateral shifts of facies zones. Based on calculations of phragmocone implosion depths, depositional depths of 50–130 m are plausible for the Olenidsletta Member, supporting independent evidence from biomarker signatures. Several cephalopod species of the Olenidsletta Member represent odd mosaics of morphological features of previously known cephalopods which cannot be unambiguously assigned to one of the existing cephalopod higher taxa. Results from a cladistic analysis shed new light on the early evolution of the Oncocerida and Orthocerida.

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Niko, Shuji. "Reexamination of a Permian Tentaculites-Like Fossil Iwakiella ichiroi Hatai, Kotaka and Noda, 1972, as an Orthocerid Cephalopod". Paleontological Research 26, n.º 3 (1 de julho de 2022). http://dx.doi.org/10.2517/pr200010.

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Yang, Aihua, Diying Huang, Brett Clark e Consuelo Sendino. "Description of new Permian orthocerid forms from Gufeng Formation of South China (the Yangtze Craton) and their palaeobiogeographic implications in the Palaeotethys". Historical Biology, 3 de novembro de 2020, 1–18. http://dx.doi.org/10.1080/08912963.2020.1830277.

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Mutvei, Harry. "Hitherto undetected pore-canal network in the shell wall of the Ordovician Orthoceras from Baltoscandia (Cephalopoda: orthoceratida, calciosiphonata)". GFF, 27 de setembro de 2022, 1–7. http://dx.doi.org/10.1080/11035897.2022.2042377.

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Evans, D. H., M. Ghobadi Pour, L. E. Popov e H. Jahangir. "An Early Silurian (Aeronian) cephalopod fauna from Kopet-Dagh, north-eastern Iran: including the earliest records of non-orthocerid cephalopods from the Silurian of Northern Gondwana". Bulletin of Geosciences, 23 de março de 2015, 479–507. http://dx.doi.org/10.3140/bull.geosci.1540.

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