Thematische Bibliographien / Paleontology – british columbia – yoho national park

Auswahl der wissenschaftlichen Literatur zum Thema „Paleontology – british columbia – yoho national park“

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Veröffentlicht am 25. Juli 2024

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Zeitschriftenartikel zum Thema "Paleontology – british columbia – yoho national park"

1

Hong, Won S., John Snyder, David Trexler und Peter Kuchar. „A list of Hepaticae from Yoho National Park, British Columbia, Canada“. Evansia 5, Nr. 1 (1988): 6–13. http://dx.doi.org/10.5962/p.345866.

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2

Reasoner, Mel A., und Michael Hickman. „Late Quaternary environmental change in the Lake O'Hara region, Yoho National Park, British Columbia“. Palaeogeography, Palaeoclimatology, Palaeoecology 72 (Januar 1989): 291–316. http://dx.doi.org/10.1016/0031-0182(89)90149-1.

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3

Yochelson, Ellis L., und Mikhail A. Fedonkin. „The type specimens (Middle Cambrian) of the trace fossil Archaeonossa Fenton and Fenton“. Canadian Journal of Earth Sciences 34, Nr. 9 (01.09.1997): 1210–19. http://dx.doi.org/10.1139/e17-097.

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The original description of Archaeonossa, from beds considered Early Cambrian but now dated as early Middle Cambrian, included at least two unrelated forms of trace fossils. The ichnogenus and the type ichnospecies are redefined, a lectotype is designated, and the type material is reiilustrated, along with topotype material from Yoho National Park, British Columbia. Although this trace fossil was originally attributed to movement by a gastropod, it is concluded, on the basis of restudy, that the type occurrence should not be used as evidence of activity by Gastropoda.
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4

Legg, David. „Multi-Segmented Arthropods from the Middle Cambrian of British Columbia (Canada)“. Journal of Paleontology 87, Nr. 3 (Mai 2013): 493–501. http://dx.doi.org/10.1666/12-112.1.

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A new arthropod, Kootenichela deppi n. gen. n. sp., is described from the Stanley Glacier exposure of the middle Cambrian (Series 3, Stage 5) Stephen Formation in Kootenay National Park (British Columbia, Canada). This taxon possesses a number of primitive arthropod features such as an elongate, homonomous trunk (consisting of at least 29 segments), poorly sclerotised trunk appendages, and large pedunculate eyes associated with an anterior (ocular) sclerite. The cephalon encompasses a possible antenna-like appendage and enlarged raptorial appendages with a bipartite peduncle and three spinose distal podomeres, indicative of megacheiran (“great-appendage” arthropod) affinities. The relationships of megacheirans are controversial, with them generally considered as either stem-euarthropods or a paraphyletic stem-lineage of chelicerates. An extensive cladistic analysis resolved Kootenichela as sister-taxon to the enigmatic Worthenella cambria from the middle Cambrian (Series 3, Stage 5), Burgess Shale Formation in Yoho National Park (British Columbia), which is herein reinterpreted as a megacheiran arthropod. Based on their sister-group relationship, both taxa were placed in the new family Kootenichelidae, to which Pseudoiulia from the Chengjiang biota is also tentatively assigned. All of these taxa possess an elongate, multi-segmented body and subtriangular exopods. This family occupies a basal position within a paraphyletic Megacheira, the immediate outgroup of Euarthropoda (crown-group arthropods). The resultant topology indicates that analyses that have resolved megacheirans as stem-chelicerates have done so because they have rooted on inappropriate taxa, e.g., trilobitomorphs and marrellomorphs.
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5

Nanglu, Karma, Jean-Bernard Caron und Robert R. Gaines. „The Burgess Shale paleocommunity with new insights from Marble Canyon, British Columbia“. Paleobiology 46, Nr. 1 (Februar 2020): 58–81. http://dx.doi.org/10.1017/pab.2019.42.

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AbstractThe middle (Wuliuan Stage) Cambrian Burgess Shale is famous for its exceptional preservation of diverse and abundant soft-bodied animals through the “thick” Stephen Formation. However, with the exception of the Walcott Quarry (Fossil Ridge) and the stratigraphically older Tulip Beds (Mount Stephen), which are both in Yoho National Park (British Columbia), quantitative assessments of the Burgess Shale have remained limited. Here we first provide a detailed quantitative overview of the diversity and structure of the Marble Canyon Burgess Shale locality based on 16,438 specimens. Located 40 km southeast of the Walcott Quarry in Kootenay National Park (British Columbia), Marble Canyon represents the youngest site of the “thick” Stephen Formation. We then combine paleoecological data sets from Marble Canyon, Walcott Quarry, Tulip Beds, and Raymond Quarry, which lies approximately 20 m directly above the Walcott Quarry, to yield a combined species abundance data set of 77,179 specimens encompassing 234 species-level taxa. Marble Canyon shows significant temporal changes in both taxonomic and ecological groups, suggesting periods of stasis followed by rapid turnover patterns at local and short temporal scales. At wider geographic and temporal scales, the different Burgess Shale sites occupy distinct areas in multivariate space. Overall, this suggests that the Burgess Shale paleocommunity is far patchier than previously thought and varies at both local and regional scales through the “thick” Stephen Formation. This underscores that our understanding of Cambrian diversity and ecological networks, particularly in early animal ecosystems, remains limited and highly dependent on new discoveries.
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6

Reasoner, Mel A., und Raymond E. Healy. „Identification and significance of tephras encountered in a core from Mary Lake, Yoho National Park, British Columbia“. Canadian Journal of Earth Sciences 23, Nr. 12 (01.12.1986): 1991–99. http://dx.doi.org/10.1139/e86-184.

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Mary Lake is a small, subalpine lake located proximal (<3 km) to the Continental Divide near Lake O'Hara in Yoho National Park, British Columbia. A 1.25 m core recovered from surficial bottom sediments was found to contain both Bridge River tephra (2350 years BP) and Mazama tephra (6800 years BP). Identification of the tephras was initially based on distinctive colour, texture, phenocryst assemblages, and glass shard habits and was confirmed by electron microprobe analysis of the constituent glass shards. The microprobe technique employed backscattered and secondary electron imagery and both energy dispersive and wavelength dispersive analyses.Mean annual sedimentation rates calculated from tephra depths in the Mary Lake core were found to be of the order of 0.15 mm/year for the post-Bridge River time period and 0.02 mm/year for the Mazama – Bridge River interval. The preservation of Mazama tephra in Mary Lake lacustrine sediments indicates that deglaciation had proceeded upvalley from the Mary Lake basin prior to 6800 years BP, and consequently, moraine systems exposed downvalley are pre-Mazama in age.
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7

LoDuca, Steven T., Jean-Bernard Caron, James D. Schiffbauer, Shuhai Xiao und Anthony Kramer. „A reexamination of Yuknessia from the Cambrian of British Columbia and Utah“. Journal of Paleontology 89, Nr. 1 (Januar 2015): 82–95. http://dx.doi.org/10.1017/jpa.2014.7.

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AbstractTo investigate the phylogenetic affinity of Yuknessia simplex Walcott, 1919, scanning electron microscopy was applied to the Burgess Shale (Cambrian Series 3, Stage 5) type material and to new material from the Trilobite Beds (Yoho National Park) and specimens from the Cambrian of Utah. On the basis of fine-scale details observed using this approach, including banding structure interpreted as fusellae, Yuknessia Walcott, 1919 is transferred from the algae, where it resided for nearly a century, to the extant taxon Pterobranchia (Phylum Hemichordata). Considered as such, Yuknessia specimens from the Trilobite Beds and Spence Formation (Utah) are amongst the oldest known colonial pterobranchs. Two morphs regarded herein as two different species are recognized from the Trilobite Beds based on tubarium morphology. Yuknessia simplex has slender erect tubes whereas Yuknessia stephenensis n. sp., which is also known in Utah, has more robust erect tubes. The two paratypes of Y. simplex designated by Walcott (1919) are formally removed from Yuknessia and are reinterpreted respectively as an indeterminate alga and Dalyia racemata Walcott, 1919, a putative red alga.
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8

Rogerson, R. J. „Measured Re-advance of a Debris-covered Glacier Terminus in the President Range, Yoho National Park, British Columbia, Canada“. Journal of Glaciology 31, Nr. 107 (1985): 13–17. http://dx.doi.org/10.1017/s0022143000004937.

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AbstractMeasurements made at the terminus of Emerald Glacier in the Rocky Mountains of Canada indicate terminal re-advance in the order of one to two metres per year sustained since 1978 at least. Re-advance is maximum along that part of the terminus which is heavily covered with supraglacial debris, where ice remains in contact with a push-moraine all summer. Re-advance may represent fluctuations of a small, responsive ice mass, or the early effects of recent climatic deterioration.
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Rogerson, R. J. „Measured Re-advance of a Debris-covered Glacier Terminus in the President Range, Yoho National Park, British Columbia, Canada“. Journal of Glaciology 31, Nr. 107 (1985): 13–17. http://dx.doi.org/10.3189/s0022143000004937.

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AbstractMeasurements made at the terminus of Emerald Glacier in the Rocky Mountains of Canada indicate terminal re-advance in the order of one to two metres per year sustained since 1978 at least. Re-advance is maximum along that part of the terminus which is heavily covered with supraglacial debris, where ice remains in contact with a push-moraine all summer. Re-advance may represent fluctuations of a small, responsive ice mass, or the early effects of recent climatic deterioration.
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10

O’Brien, Lorna J., und Jean-Bernard Caron. „Paleocommunity Analysis of the Burgess Shale Tulip Beds, Mount Stephen, British Columbia: Comparison with the Walcott Quarry and Implications for Community Variation in the Burgess Shale“. Paleobiology 42, Nr. 1 (06.11.2015): 27–53. http://dx.doi.org/10.1017/pab.2015.17.

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AbstractThe Tulip Beds locality on Mount Stephen (Yoho National Park, British Columbia) yields one of the most abundant and diverse (~10,000 specimens in 110 taxa) Burgess Shale fossil assemblages in the Canadian Rockies. Detailed semi quantitative and quantitative analyses of this assemblage suggest strong similarities with the Walcott Quarry on Fossil Ridge. Both assemblages are dominated by epibenthic, sessile, and suspension feeding taxa, mostly represented by arthropods and sponges and have comparable diversity patterns, despite sharing only about half the genera. However, the Tulip Beds has a higher relative abundance of suspension feeders and taxa of unknown affinity compared to the Walcott Quarry. These biotic variations are probably largely attributable to ecological and evolutionary differences between the two temporally distinct communities that adapted to similar, but not identical, environmental settings. For instance, the Tulip Beds is farther away from the Cathedral Escarpment than the Walcott Quarry. The Tulip Beds and Walcott Quarry assemblages are more similar to each other than either one is to the assemblages of the Chengjiang biota, although the relative diversity of major taxonomic groups and ecological patterns are similar in all assemblages. The conserved diversity patterns and ecological structures among sites suggest that the ecological composition of Cambrian Burgess Shale-type communities was relatively stable across wide geographic and temporal scales.
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Dissertationen zum Thema "Paleontology – british columbia – yoho national park"

1

David, Claude R. „Hydrological regimes of nival and glacierized mountain basins, Yoho National Park, British Columbia“. Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5862.

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Bücher zum Thema "Paleontology – british columbia – yoho national park"

1

Morris, S. Conway. Fossils of the Burgess Shale: A national treasure in Yoho National Park, British Columbia. Ottawa, Canada: Geological Survey of Canada, 1985.

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2

Canada, Geological Survey of. Fossils of the Burgess Shale: A National Treasure in Yoho National Park, British Columbia. S.l: s.n, 1985.

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3

Gould, Stephen Jay. Wonderful life: The Burgess Shale and the nature of history. New York: W.W. Norton, 1989.

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4

Gould, Stephen Jay. Wonderful life: The Burgess Shale and the nature of history. London: Hutchinson Radius, 1990.

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5

Gould, Stephen Jay. Wonderful life: The Burgess shale and the nature of history. Harmondsworth: Penguin, 1991.

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6

Gould, Stephen Jay. Wonderful Life: Burgess Shale and the Nature of History. Radius, 1990.

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7

Wonderful Life: Burgess Shale. Books on Tape, 1989.

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8

Wonderful Life: The Burgess Shale And The Nature Of History. Books on Tape, Inc., 1990.

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9

Gould, Stephen Jay. Wonderful life. W. W. Norton, 1989.

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10

Gould, Stephen Jay. Wonderful Life: The Burgess Shale and the Nature of History. W. W. Norton, 1990.

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Berichte der Organisationen zum Thema "Paleontology – british columbia – yoho national park"

1

Morris, S. C., und H. B. Whittington. Fossils of the Burgess Shale, a national treasure in Yoho National Park, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120342.

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