Results 41 to 50 of about 37,880 (284)

High-resolution carbon isotope changes in the Permian-Triassic boundary interval, Chongqing, South China; implications for control and growth of earliest Triassic microbialites

, 2009
High-resolution delta13C_CARB analysis of the Permian-Triassic boundary (PTB) interval at the Laolongdong section, Beibei, near the city of Chongqing, south China, encompasses the latest Permian and earliest Triassic major facies changes in the South ...
Kershaw, S, Guo, Li, Le Heron, D.P., D.P. Le Heron, Qi, Y, Wilson, C., Reynolds, Alan, H.A. Armstrong, Gindre, L., Mu, X, Reynolds, A, Kershaw, Steve, Armstrong, H.A., Li, Y, Qi, Yuping, Howard, J.P., L. Gindre, Li, Yue, Mu, Xinan, C. Wilson, Guo, L, LeHeron, D., Wilson, C.R., J.P. Howard   +23 more
core   +1 more source

Taxonomic revision of Asialepidotus shingyiensis Su, 1959 (Halecomorphi, Holostei) from the Middle Triassic (Ladinian) of Guizhou and Yunnan, China [PDF]

Research & Knowledge, 2017
The holostean fish Asialepidotus shingyiensis, from the Middle Triassic (Ladinian) of Guizhou and Yunnan, China, was previously regarded as either a semionotiform ginglymodian or an amiiform halecomorph.
Guang-Hui Xu, Xin-Ying Ma
doaj   +1 more source

Earliest Triassic microbialites in the South China Block and other areas; controls on their growth and distribution

, 2007
Earliest Triassic microbialites (ETMs) and inorganic carbonate crystal fans formed after the end-Permian mass extinction (ca. 251.4 Ma) within the basal Triassic Hindeodus parvus conodont zone.
Kershaw, S, Feng, Q. L., Reynolds, A., Guo, L., Colin, J.-P., Crasquin-Soleau, S, Li, Y., Feng, Q, Mu, X, Reynolds, A, Crasquin-Soleau, S., Feng, Q., Li, Y, Mu, X. N., Collin, P. Y., Kershaw, S., Mu, X., Collin, PY, Guo, L   +18 more
core   +1 more source

Ostracods (Crustacea) associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China)

, 2012
26 samples were processed for a taxonomic study of ostracods from the Upper Permian (Changhsingian) - Lower Triassic (Griesbachian) interval of the Dajiang section, Guizhou Province, South China. 112 species belonging to 27 genera are recognized.
Marie-Beatrice FOREL, Forel, Marie-Béatrice, Forel, Marie-B\ue9atrice   +2 more
core   +1 more source

Morphological and biomechanical disparity of crocodile-line archosaurs following the end-Triassic extinction [PDF]

, 2013
Mesozoic crurotarsans exhibited diverse morphologies and feeding modes, representing considerable ecological diversity, yet macroevolutionary patterns remain unexplored.
Anderson, Philip S. L., Anderson, P S L, Rayfield, Emily J, Pierce, S E, Rayfield, E J, Stubbs, Thomas L, Pierce, Stephanie, E., Stubbs, T L   +7 more
core   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

The Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen, Ivo Jacobs, Kristina Kverková, Lona Lalić, Alexandra Polonyiová, Patrik Stehlík, Stephan A. Reber, Mathias Osvath   +7 more
wiley   +1 more source

Pore evolution in tight sandstone and its impact on oil saturation: a case study of Chang 6 to Chang 8 reservoirs in Triassic Yanchang Formation, Ganquan area, Ordos Basin

Shiyou shiyan dizhi
Tight sandstone reservoirs exhibit strong microscopic heterogeneity and significant variations in oil saturation. To investigate the variations in pore and throat size distribution during the diagenesis of tight sandstone reservoirs as well as their ...
Hongli ZHONG, Lihua CHEN, Fengqi ZHANG, Yongqi LIANG   +3 more
doaj   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

K-feldspar sand-grain provenance in the Triassic, west of Shetland : distinguishing first-cycle and recycled sediment sources?

, 2009
Sandstone provenance studies can help constrain palaeogeographic reconstructions and ancient drainage system scales and pathways. However, these insights can be obscured by difficulties in geochemically distinguishing or adequately characterising ...
Daly, J. Stephen, Shane Tyrrell, Tyrrell, Shane, Leleu, Sophie, J. Stephen Daly, Souders, A. Kate, Haughton, Peter D. W., Peter D.W. Haughton, Sophie Leleu, A. Kate Souders   +9 more
core   +1 more source