Antiquity of forelimb ecomorphological diversity in the mammalian stem lineage (Synapsida) [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance Mammals and their closest fossil relatives use their shoulders and forelimbs for many functions, which is reflected by the great range of mammalian forelimb shapes. We found that forelimb shape diversity in the early mammalian lineage (Synapsida) began to increase about 270 million years ago, with the emergence of a group called ...
Jacqueline Lungmus, Kenneth D Angielczyk
exaly +5 more sources
Mammals (Synapsida: Theria) of Colombia
Biota Colombiana, 2000 -
Michael Alberico +2 more
doaj +2 more sources
Mamíferos (Synapsida, Theria) del Valle del Cauca, Colombia
Biota Colombiana, 2012 A mammal's (Synapsida: Theria) checklist, of the department of Valle del Cauca (Colombia) is presented. A historical background is given about the expeditions and collections carried out in the department.
Vladimir Rojas-Díaz +2 more
doaj +5 more sources
The rise and fall of Varanopidae† (Amniota, Synapsida)
Frontiers in Earth ScienceStudy of past biological crises is now a timely topic because we may be in the midst of an anthropogenic mass extinction event. A skyline Fossilized Birth-Death (FBD) analysis of a dataset of 21 varanopid taxa, ranging in geological age from the mid ...
Michel Laurin, Gilles Didier
doaj +3 more sources
The maxillary canal of the titanosuchid Jonkeria (Synapsida, Dinocephalia). [PDF]
Naturwissenschaften, 2023 AbstractThe maxillary canal of the titanosuchid dinocephalian Jonkeria is described based on digitised serial sections. We highlight that its morphology is more like that of the tapinocephalid Moschognathus than that of Anteosaurus. This is unexpected given the similarities between the dentition of Jonkeria and Anteosaurus (i.e., presence of a canine ...
Benoit J, Norton LA, Jirah S.
europepmc +3 more sources
Body size reductions in nonmammalian eutheriodont therapsids (Synapsida) during the end-Permian mass extinction. [PDF]
PLoS ONE, 2014 The extent to which mass extinctions influence body size evolution in major tetrapod clades is inadequately understood. For example, the 'Lilliput effect,' a common feature of mass extinctions, describes a temporary decrease in body sizes of survivor ...
Adam K Huttenlocker
doaj +4 more sources
Função das Presas Caniniformes no Dicinodonte Dinodontosaurus Romer, 1943 (Synapsida, Anomodontia). [PDF]
Anuário do Instituto de Geociências, 2007 As limitações mecânicas impostas pelamusculatura são significativas sobre o grau deabertura da mandíbula e repercutem diretamentena forma de obtenção de alimento dos vertebrados,especialmente quando lidamos com animaiscom presas hipertrofiadas.
Leonardo Morato +2 more
doaj +3 more sources
Marcas de Predação ou Necrofagia em Stahleckeria potens Huene, 1935 (Synapsida: Dicynodontia) [PDF]
Anuário do Instituto de Geociências, 2007 O estabelecimento dos níveis de interaçõesentre tetrápodes extintos baseia-se, sobretudo, eminferências obtidas por meio da análise morfológicae funcional de ossos e dentes fósseis, quepermitem a determinação de hábitos alimentarescom certa segurança ...
Cibele Schwanke
doaj +3 more sources
A Briefly Argued Case That Asgard Archaea Are Part of the Eukaryote Tree [PDF]
Frontiers in Microbiology, 2018 The recent discovery of the Lokiarchaeota and other members of the Asgard superphylum suggests that closer analysis of the cell biology and evolution of these groups may help shed light on the origin of the eukaryote cell. Asgard lineages often appear in
Gregory P. Fournier, Anthony M. Poole
doaj +2 more sources
New evidence from high-resolution computed microtomography of Triassic stem-mammal skulls from South America enhances discussions on turbinates before the origin of Mammaliaformes [PDF]
Scientific ReportsThe nasal cavity of living mammals is a unique structural complex among tetrapods, acquired along a series of major morphological transformations that occurred mainly during the Mesozoic Era, within the Synapsida clade.
Pedro H. M. Fonseca +8 more
doaj +2 more sources