Results 31 to 40 of about 1,118 (184)
Cranial anatomy of Bolotridon frerensis, an enigmatic cynodont from the Middle Triassic of South Africa, and its phylogenetic significance [PDF]
PeerJ, 2021 The cynodont fauna of the Trirachodon-Kannemeyeria Subzone of the Middle Triassic Cynognathus Assemblage Zone (AZ) is almost exclusively represented by taxa belonging to the clade Eucynodontia.
Luisa C. Pusch +2 more
doaj +2 more sources
Computed Tomography elucidates ontogeny within the basal therapsid clade Biarmosuchia [PDF]
PeerJ, 2021 Biarmosuchia is a clade of basal therapsids that includes forms possessing plesiomorphic ‘pelycosaurian’ cranial characters as well as the highly derived Burnetiamorpha which are characterised by cranial pachyostosis and a variety of cranial bosses ...
Aliénor Duhamel +4 more
doaj +2 more sources
Tiarajudens eccentricus and Anomocephalus africanus, two bizarre anomodonts (Synapsida, Therapsida) with dental occlusion from the Permian of Gondwana [PDF]
Royal Society Open Science, 2015 Anomodontia was a highly successful tetrapod clade during the Permian and the Triassic. New morphological information regarding two bizarre basal anomodonts is provided and their palaeoecological significance is explored.
Juan Carlos Cisneros +4 more
doaj +1 more source
THE OLDEST THEROCEPHALIANS (THERAPSIDA, EUTHERIODONTIA) AND THE EARLY DIVERSIFICATION OF THERAPSIDA [PDF]
Palaeontology, 2008 Abstract: The oldest records of mammal‐like therapsids in Laurasia are from the Ocher Complex of Russia and the Xidagou Formation of China, whereas in Gondwana they are restricted to theEodicynodonAssemblage Zone, Beaufort Group of the South African Karoo.
FERNANDO ABDALA +2 more
openaire +1 more source
DBC1/CCAR2 and CCAR1 Are Largely Disordered Proteins that Have Evolved from One Common Ancestor. [PDF]
Biomed Res Int, 2014 Deleted in breast cancer 1 (DBC1, CCAR2, KIAA1967) is a large, predominantly nuclear, multidomain protein that modulates gene expression by inhibiting several epigenetic modifiers, including the deacetylases SIRT1 and HDAC3, and the methyltransferase SUV39H1.
Brunquell J +4 more
europepmc +2 more sources
Frontiers in Ecology and Evolution, 2020 Therocephalia is one of the major therapsid clades and ranges from the middle Permian to Middle Triassic. The earliest therocephalians were large-bodied predators whose fossils are common in middle Permian rocks of South Africa, but have received little ...
Luisa C. Pusch +8 more
doaj +1 more source
New tools suggest a middle Jurassic origin for mammalian endothermy
BioEssays, Volume 44, Issue 4, April 2022., 2022 We synthesise recent developments to revise understanding of when, why, and how mammalian endothermy evolved. Modern levels of mammalian endothermy likely first appear in Jurassic early crown mammals or their close relatives, as part of a series of macroevolutionary phases reflecting shifting ecological/environmental pressures acting on various aspects
Elis Newham +2 more
wiley +1 more source
The origins of the cochlea and impedance matching hearing in synapsids [PDF]
Acta Palaeontologica Polonica, 2016 The origin of tympanic hearing in early synapsids is still controversial, because little is known about their inner ear and the function of their sound conducting apparatus. Here I describe the earliest known tympanic ear in the synapsid lineage, the ear
Michael Laass
doaj +1 more source
Biological Reviews, Volume 96, Issue 5, Page 2229-2257, October 2021., 2021 ABSTRACT The morphology of the temporal region in the tetrapod skull traditionally has been a widely discussed feature of vertebrate anatomy. The evolution of different temporal openings in Amniota (mammals, birds, and reptiles), Lissamphibia (frogs, salamanders, and caecilians), and several extinct tetrapod groups has sparked debates on the ...
Pascal Abel, Ingmar Werneburg
wiley +1 more source
Craniogenetic studies in Sus scrofa: With emphasis on the 'orbitosphenoid' problem. [PDF]
Anat Rec (Hoboken)Abstract The orbitosphenoid is a skeletal element of the endocranium of extant mammals. However, it has also been described in many of their fossil ancestors. Craniogenetic studies show that it is composed of two types of bone: first, the cartilaginous ala orbitalis and parts of the trabecular plate are transformed by endochondral ossification; second,
Maier W, Lächele U, Lächele U, Ruf I.
europepmc +2 more sources