Bibliografías temáticas / Invertebrates, fossil – british columbia – yoho national park

Literatura académica sobre el tema "Invertebrates, fossil – british columbia – yoho national park"

Autor: Grafiati
Publicado: 25 de julio de 2024

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Artículos de revistas sobre el tema "Invertebrates, fossil – british columbia – yoho national park"

1

Yochelson, Ellis L. y Mikhail A. Fedonkin. "The type specimens (Middle Cambrian) of the trace fossil Archaeonossa Fenton and Fenton". Canadian Journal of Earth Sciences 34, n.º 9 (1 de septiembre de 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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2

Nanglu, Karma, Jean-Bernard Caron y Robert R. Gaines. "The Burgess Shale paleocommunity with new insights from Marble Canyon, British Columbia". Paleobiology 46, n.º 1 (febrero de 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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3

O’Brien, Lorna J. y 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, n.º 1 (6 de noviembre de 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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4

Zhao, Fangchen, Jean-Bernard Caron, David J. Bottjer, Shixue Hu, Zongjun Yin y Maoyan Zhu. "Diversity and species abundance patterns of the Early Cambrian (Series 2, Stage 3) Chengjiang Biota from China". Paleobiology 40, n.º 1 (2014): 50–69. http://dx.doi.org/10.1666/12056.

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Lagerstättenfrom the Precambrian–Cambrian transition have traditionally been a relatively untapped resource for understanding the paleoecology of the “Cambrian explosion.” This quantitative paleoecological study is based on 10,238 fossil specimens belonging to 100 animal species, 11 phyla, and 15 ecological categories from the lower Cambrian (Series 2, Stage 3) Chengjiang biota (Mafang locality near Haikou, Yunnan Province, China). Fossils were systematically collected within a 2.5-meter-thick sequence divided into ten stratigraphic intervals. Each interval represents an induced time-averaged assemblage of various event (obrution) beds of unknown duration. Overall, the different fossil assemblages are taxonomically and ecologically similar, suggesting the presence of a single community type recurring throughout the Mafang section. The Mafang community is dominated by epibenthic vagile hunters or scavengers, sessile suspension feeders, and infaunal vagile hunters or scavengers represented primarily by arthropods, brachiopods, and priapulids, respectively. Most species have low abundance and low occurrence frequencies, whereas a few species are numerically abundant and occur frequently. Overall, in structure and ecology the Mafang community is comparable to the Middle Cambrian (Series 3, Stage 5) Burgess Shale biota (Walcott Quarry, Yoho National Park, British Columbia, Canada). This suggests that, despite variations in species identity within taxonomic and ecological groups, the structure and ecology of Cambrian Burgess Shale-type communities remained relatively stable until at least the Middle Cambrian (Series 3, Stage 5) in subtidal to relatively deep-water offshore settings in siliciclastic soft-substrate environments.
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Libros sobre el tema "Invertebrates, fossil – 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

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

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3

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

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4

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

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5

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

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6

Gould, Stephen Jay. Wonderful Life: The Burgess Shale and the Nature of History. Replica Books, 1989.

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7

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

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8

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

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9

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

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10

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

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