Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Timothy P. Topper"'
Autor:
Luoyang Li, Timothy P. Topper, Marissa J. Betts, Gundsambuu Altanshagai, Batktuyag Enkhbaatar, Guoxiang Li, Sanzhong Li, Christian B. Skovsted, Linhao Cui, Xingliang Zhang
Publikováno v:
iScience, Vol 27, Iss 3, Pp 109112- (2024)
Summary: The evolutionary mechanism behind the early Cambrian animal skeletonization was a complex and multifaceted process involving environmental, ecological, and biological factors. Predation pressure, oxygenation, and seawater chemistry change ha
Externí odkaz:
https://doaj.org/article/eb94534c871a4a6996e4f5390f662279
Publikováno v:
BMC Ecology and Evolution, Vol 22, Iss 1, Pp 1-15 (2022)
Abstract Background A small hyolith, with a triangular operculum and a conical-pyramidal conch with a sharp apex, originally documented as Ambrolinevitus ventricosus, is revised based on new material from the Chengjiang biota. The operculum of ‘Amb
Externí odkaz:
https://doaj.org/article/61821c120fb7429f80a9579add976901
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 141-0 (2023)
Hyolitha is a group of extinct invertebrates, the most dominant benthic animals within the Cambrian evolutionary fauna and forming a part of the Palaeozoic evolutionary fauna. Hyoliths are generally divided into two groups, Orthothecida and Hyolithid
Externí odkaz:
https://doaj.org/article/b50e0b6146b44b9f96864c89f53d813c
Autor:
Yue Liang, Luke C. Strotz, Timothy P. Topper, Lars E. Holmer, Graham E. Budd, Yanlong Chen, Ruisen Fang, Yazhou Hu, Zhifei Zhang
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 140-0 (2023)
Morphology usually serves as an effective proxy for functional ecology, and the evaluation of morphological, anatomical, and ecological changes allows for a deeper understanding of the nature of diversification and macroevolution. Lingulid (Order Lin
Externí odkaz:
https://doaj.org/article/23dc7eb44f5f4ae8b9dcfeb4c44f8391
Autor:
Zhifei Zhang, Luke C. Strotz, Timothy P. Topper, Feiyang Chen, Yanlong Chen, Yue Liang, Zhiliang Zhang, Christian B. Skovsted, Glenn A. Brock
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Parasitic interactions are difficult to document in the fossil record. Here, Zhang et al. analyze a large population of a Cambrian brachiopod and show it was frequently encrusted by tubes aligned to its feeding currents and that encrustation was asso
Externí odkaz:
https://doaj.org/article/227bbf85dfae462d84f6f72560bb77e1
Autor:
Luoyang Li, Marissa J. Betts, Hao Yun, Bing Pan, Timothy P. Topper, Guoxiang Li, Xingliang Zhang, Christian B. Skovsted
Publikováno v:
Biology, Vol 12, Iss 1, p 113 (2023)
The Precambrian–Cambrian interval saw the first appearance of disparate modern metazoan phyla equipped with a wide array of mineralized exo- and endo-skeletons. However, the current knowledge of this remarkable metazoan skeletonization bio-event an
Externí odkaz:
https://doaj.org/article/3616d772343e4f7fb0fea88f0680ba6c
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-3 (2020)
Externí odkaz:
https://doaj.org/article/a8a862c8b15945d08cd831dbe9ff5d38
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
The early evolution of the deuterostomes is not well resolved. Here, Topper and colleagues investigate the early Cambrian metazoan Yanjiahella biscarpa, concluding that it is a stem echinoderm, is among the oldest known deuterstomes, and supports an
Externí odkaz:
https://doaj.org/article/edce60fbb7d546019c337569aa0bac9c
Publikováno v:
Biology, Vol 11, Iss 6, p 875 (2022)
New hyolith specimens from the early Cambrian (Stage 4) of the Three Gorges area, western Hubei Province are described and assigned to the species Doliutheca orientalis. Doliutheca are preserved in two taphonomic modes: casts in silty mudstone reveal
Externí odkaz:
https://doaj.org/article/bfb397fb5aaf40a383e06b4ff4541a0e
Autor:
Luoyang Li, Timothy P. Topper, Marissa J. Betts, Dorj Dorjnamjaa, Gundsambuu Altanshagai, Baktuyag Enkhbaatar, Guoxiang Li, Christian B. Skovsted
Publikováno v:
Geology. 51:8-12
The initial acquisition of calcium carbonate polymorphs (aragonite and calcite) at the onset of skeletal biomineralization by disparate metazoans across the Ediacaran-Cambrian transition is thought to be directly influenced by Earth's seawater chemis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c488a3541086557bc1b2a5b2e3a68cb
https://doi.org/10.1130/g50533.1
https://doi.org/10.1130/g50533.1