Results 71 to 80 of about 1,118 (184)

First record of non-mammalian cynodonts (Therapsida) in the Sanga do Cabral Formation (Early Triassic) of southern Brazil [PDF]

open access: yes, 2002
New material from the Sanga do Cabral Formation in southern Brazil is described, including one distal and three proximal portions of femora, and a distal portion of a humerus.
Abdala, Fernando   +2 more
core  

First CT‐assisted study of the palate and postcrania of Diarthrognathus broomi (Cynodontia, Probainognathia)

open access: yesThe Anatomical Record, Volume 307, Issue 4, Page 1538-1558, April 2024.
Abstract Diarthrognathus broomi is a transitional taxon between non‐mammaliaform cynodonts and Mammaliaformes that occurred during the Late Triassic to Early Jurassic. All known specimens of Diarthrognathus represent juveniles, and the postcrania have not been thoroughly described.
Erin S. Lund   +2 more
wiley   +1 more source

Biological aspects of the Permian dicynodont Oudenodon (Therapsida: Dicynodontia) deduced from bone histology and cross-sectional geometry [PDF]

open access: yes, 2003
Main articleBone histology and cross-sectional geometry were used to examine the growth patterns and lifestyle habits of the Late Permian dicynodont, Oudenodon.
Botha, Jennifer
core  

Gut microbiota as a trigger of accelerated directional adaptive evolution. Acquisition of herbivory in the context of extracellular vesicles, microRNAs and inter-kingdom crosstalk [PDF]

open access: yes, 2017
According to a traditional view, the specific diet in vertebrates is one of the key factors structuring the composition of the gut microbiota. In this interpretation, the microbiota assumes a subordinate position, where the larger host shapes, through ...
Romano, Marco
core   +1 more source

The origin and evolution of Cynodontia (Synapsida, Therapsida): Reassessment of the phylogeny and systematics of the earliest members of this clade using 3D‐imaging technologies

open access: yesThe Anatomical Record, Volume 307, Issue 4, Page 1634-1730, April 2024.
Abstract The origin of cynodonts, the group ancestral to and including mammals, is one of the major outstanding problems in therapsid evolution. One of the most troubling aspects of the cynodont fossil record is the lengthy Permian ghost lineage between the latest possible divergence from its sister group Therocephalia and the first appearance of ...
Luisa C. Pusch   +2 more
wiley   +1 more source

A new mid-Permian burnetiamorph therapsid from the Main Karoo Basin of South Africa and a phylogenetic review of Burnetiamorpha [PDF]

open access: yesActa Palaeontologica Polonica, 2016
Discoveries of burnetiamorph therapsids in the last decade and a half have increased their known diversity but they remain a minor constituent of middle–late Permian tetrapod faunas.
Michael O. Day   +2 more
doaj   +1 more source

A new vertebrate biozone at the base of the Beaufort Group, Karoo sequence (South Africa) [PDF]

open access: yes, 1990
A new vertebrate biozone at the base of the Beaufort Group has been identified. This biozone is the oldest vertebrate biozone of the Beaufort Group and contains fossils of various therapsid genera which are more primitive than previously known related ...
Rubidge, Bruce S
core  

Dicynodont (Therapsida) bone histology: phylogenetic and physiological implications [PDF]

open access: yes, 1993
The bone histology of humeri of a number of taxonomically well established and easily definable dicynodont genera is described and compared. The bone of Aulacephalodon, Cistecephalus, Dicynodon, Endothiodon, Lystrosaurus, Kannemeyeria and Oudenodon ...
Chinsamy, Anusuya, Rubidge, Bruce S
core  

Evidence for salt glands in the Triassic reptile Diademodon (Therapsida; Cynodontia) [PDF]

open access: yes, 1979
Main articleFossilised skulls of Diademodon exhibit rostral depressions which may have housed salt glands. The possible functions of salt glands in this advanced cynodont are examined.
Gow, C. E.   +4 more
core  

Allometric growth in the Diademodontinae (Reptilia; Therapsida); a preliminary report [PDF]

open access: yes, 1978
Main articleThe hypothesis that many, if not all, of the South African and Zambian specimens, which have been regarded as different diademodontine genera and species, actually consitute a taxonomically homogeneous, ontogenetic growth series is tested ...
Grine, F. E., Hahn, B. D.
core  

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