Results 21 to 30 of about 425 (133)
Whole-body endothermy: ancient, homologous and widespread among the ancestors of mammals, birds and crocodylians. [PDF]
Biol Rev Camb Philos Soc, 2022 ABSTRACT The whole‐body (tachymetabolic) endothermy seen in modern birds and mammals is long held to have evolved independently in each group, a reasonable assumption when it was believed that its earliest appearances in birds and mammals arose many millions of years apart.
Grigg G +5 more
europepmc +2 more sources
Hypercanines: Not just for sabertooths. [PDF]
Anat Rec (Hoboken)Abstract Hypercanines are here defined as hypertrophied caniniform teeth, that is, canine teeth that are elongated to serve specific functions in different clades of mammals and their synapsid ancestors. This article presents an overview of the occurrence of hypercanines, their growth, and their function across a broad range of clades.
Werdelin L.
europepmc +2 more sources
Early synapsids neurosensory diversity revealed by CT and synchrotron scanning. [PDF]
Anat Rec (Hoboken)Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
Benoit J +6 more
europepmc +2 more sources
Cautionary tales on the use of proxies to estimate body size and form of extinct animals. [PDF]
Ecol EvolReconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Gayford JH +7 more
europepmc +2 more sources
Diversidade e aspectos paleobiológicos do registro de Dicynodontia no Brasil
Terrae Didatica, 2023 Introdução. Dicinodontes são terápsidos herbívoros cosmopolitas com um extenso registro fóssil. No Brasil, esses animais foram encontrados em depósitos dos Períodos Permiano e Triássico localizados no Paraná e Rio Grande do Sul. Objetivo e Metodologia.
João Lucas da Silva +3 more
openaire +1 more source
Journal of Morphology, Volume 284, Issue 9, September 2023., 2023 Neutron tomography of a skull of the burrower Kawingasaurus fossilis (Synapsida, Dicynodontia) revealed a system of turbinal ridges for attachment of respiratory and olfactory turbinates including remains of turbinates in the nasal cavity that strongly resemble the mammalian bauplan.
Michael Laaß, Anders Kaestner
wiley +1 more source
The dentary of hadrosauroid dinosaurs: evolution through heterochrony
Palaeontology, Volume 66, Issue 5, September/October 2023., 2023 Abstract The near‐global distribution of hadrosaurid dinosaurs during the Cretaceous has been attributed to mastication, a behaviour commonly recognized as a mammalian adaptation. Its occurrence in a non‐mammalian lineage should be accompanied by the evolution of several morphological modifications associated with food acquisition and processing.
D. Fredrik K. Söderblom +3 more
wiley +1 more source
Evidence of a therapsid scavenger in the Late Permian Karoo Basin, South Africa
South African Journal of Science, 2012 Dicynodonts are an extinct group of herbivorous non-mammalian therapsids ('mammal-like' reptiles) that are widely known from terrestrial Permo-Triassic strata throughout Pangaea. Dicynodont fossil remains are common within the Late Permian Beaufort Group
Nicholas Fordyce +2 more
doaj +4 more sources
Análisis diagenético de tetrápodos del Triásico Superior, Grupo Puesto Viejo, Argentina [PDF]
, 2016 The Puesto Viejo Group crops out in the San Rafael Block, southwest Mendoza, Argentina. This group is an important unit for the knowledge theTriassic faunas.
de la Fuente, Marcelo Saul +3 more
core +1 more source
Bone microstructure and the evolution of growth patterns in Permo-Triassic therocephalians (Amniota, Therapsida) of South Africa [PDF]
, 2014 Therocephalians were a speciose clade of nonmammalian therapsids whose ecological diversity and survivorship of the end-Permian mass extinction offer the potential to investigate the evolution of growth patterns across the clade and their underlying ...
Adam K. Huttenlocker +1 more
core +1 more source