Morphological disparity and evolutionary rates of cranial and postcranial characters in sloths (Mammalia, Pilosa, Folivora)

DM Casali, A Boscaini, TJ Gaudin, FA Perini - Palaeontology, 2023 - Wiley Online Library
Sloth morphological evolution has been widely studied qualitatively, with comparative
anatomy and morpho‐functional approaches, or through quantitative assessments of …

Convergence and constraint in the cranial evolution of mosasaurid reptiles and early cetaceans

RF Bennion, JA MacLaren, EJ Coombs, FG Marx… - Paleobiology, 2023 - cambridge.org
The repeated return of tetrapods to aquatic life provides some of the best-known examples
of convergent evolution. One comparison that has received relatively little focus is that of …

A description of the palate and mandible of Youngina capensis (Sauropsida, Diapsida) based on synchrotron tomography, and the phylogenetic implications

AK Hunt, DP Ford, V Fernandez… - Papers in …, 2023 - Wiley Online Library
Abstract The late Permian reptile Youngina capensis (c. 254 Ma) is a non‐saurian
neodiapsid whose anatomy has been used to represent the reptilian condition prior to the …

Enigmatic humerus from the mid-Permian of South Africa bridges the anatomical gap between “pelycosaurs” and therapsids

PJ Bishop, LA Norton, S Jirah, MO Day… - Journal of Vertebrate …, 2022 - Taylor & Francis
RESULTS Description of anatomical features assumes the humerus is oriented lateral to the
body, parallel to the horizontal, thus presenting dorsal, ventral, anterior, and posterior …

[HTML][HTML] Tracking 'transitional'diadectomorphs in the earliest Permian of equatorial Pangea

G Calábková, D Madzia, V Nosek, M Ivanov - PeerJ, 2023 - peerj.com
Diadectomorpha was a clade of large-bodied stem-amniotes or possibly early-diverging
synapsids that established a successful dynasty of late Carboniferous to late Permian high …

The geometry of synapsid skull disparity

J Marugán-Lobón, M Gómez-Recio… - Historical Biology, 2022 - Taylor & Francis
Synapsida represents a rich lineage of tetrapods including a mixture of morphotypes, from
reptilian-like 'pelycosaurs' to crown group mammals, spanning more than 325 My. Although …

Halgaitosaurus gregarius, a New Upper Carboniferous Araeoscelidian (Reptilia: Diapsida) from the Halgaito Formation, Bears Ears National Monument, Utah, USA

AC Henrici, DS Berman, SS Sumida… - Annals of Carnegie …, 2023 - BioOne
Halgaitosaurus gregarius is a new genus and species of araeoscelidian diapsid reptile
based on numerous specimens from the Upper Carboniferous (Virgilian, Gzhelian) Birthday …

Numerous independent gains of torpor and hibernation across endotherms, linked with adaptation to diverse environments

DG Kontopoulos, DL Levesque, M Hiller - bioRxiv, 2023 - biorxiv.org
Many endotherms from diverse taxonomic groups can respond to environmental changes
through dormancy, ie, by greatly reducing their energy expenditure for up to 24 hours (daily …

Evolutionary innovations in germline biology of placental mammals revealed by transcriptomics of first wave spermatogenesis in opossum

KL Marshall, DJ Stadtmauer, J Maziarz, GP Wagner… - bioRxiv, 2023 - biorxiv.org
Mammalian spermatogenesis is a deeply conserved developmental program that is
essential for fitness. Paradoxically, spermatogenic development also allows rapid …

The Temporal Region of the Tetrapod Skull–Research History, Evolution, and Functional Backgrounds

P Abel - 2023 - tobias-lib.ub.uni-tuebingen.de
The temporal region of the earliest Tetrapoda and their closest relatives was, in most cases,
completely covered by an armor of dermal bones. This armor has been successively …