Results 61 to 70 of about 1,052 (177)

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

Biological Reviews, Volume 101, Issue 3, Page 1073-1090, June 2026.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott, Julia A. Gamble, Caleb Marshall Brown, Kirstin S. Brink   +3 more
wiley   +1 more source

Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae)

Journal of Anatomy, Volume 248, Issue 6, Page 1026-1063, June 2026.
A three‐dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipanicicorum. The study finds that, potentially like the ancestral archosaur, this taxon was probably quadrupedal, plantigrade and neither strongly sprawling ...
Agustina Lecuona, Emily Keeble, Yuting Lin, John R. Hutchinson   +3 more
wiley   +1 more source

An exquisitely preserved young iguanodontian from the Upper Jurassic of Tanzania sheds light on skeletal fusion patterns within Archosauria

Papers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Dysalotosaurus lettowvorbecki (Ornithopoda, Dinosauria) is a small‐sized dryosaurid iguanodontian known from various isolated remains collected from the Tendaguru Formation (Upper Jurassic, Tanzania). Micro‐computed tomography of a small individual encased in a block offered a unique opportunity to describe c.
Riccardo Rocchi, Filippo Maria Rotatori, Gabriel S. Ferreira, Federico Fanti   +3 more
wiley   +1 more source

Fourth Note On The Dinosauria Of The Laramie

, 1892
Edward Drinker Cope (1892): Fourth note on the dinosauria of the Laramie.
openaire   +5 more sources

Inferred presence of extraoral tissues in Triassic archosauromorphs and the evolutionary implications for the clade Sauropsida

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Recent work has suggested that the presence of extraoral soft tissues (‘lips’), in the form of labial scales in theropod dinosaurs, could be inferred based on: anteroposteriorly distributed foramina in the rostral bones, similar to extant lepidosaurs; vertically projected teeth; uniform enamel thickness in maxillary teeth; and an allometric ...
Rafael Terras, Jaqueline Borger, Manuelle O. P. Almeida, Silvia Bettin, Owen A. Higgins, Giulia Marciani, Stefano Benazzi, Rodrigo T. Müller, Leonardo Kerber, Mirian Carbonera   +9 more
wiley   +1 more source

Teeth from the Middle Jurassic of Morocco reveal the oldest turiasaurian sauropods from Africa [PDF]

Acta Palaeontologica Polonica
Readily identifiable based on their large, “spatulate” teeth with diagnostic “heart”-shaped crowns, turiasaurians are non-neosauropodan eusauropods known from varied Jurassic and Cretaceous formations across Laurasia and Gondwana.
D. Cary Woodruff, Paul M. Barrett, Driss Ouarhache, Abdessalam El Khanchoufi, Khadija Boumir, Kawtar Ech-Charay, Ahmed Oussou, Richard J. Butler, Simon Wills, Luke Meade, Mike Smith, Susannah C.R. Maidment   +11 more
doaj   +1 more source

New perspectives on head and neck allometry and ecomorphology in tetrapods

Biological Reviews, Volume 101, Issue 2, Page 665-694, April 2026.
ABSTRACT The skull and neck are vital parts of the body, influencing feeding ecology, habitat exploitation and locomotion. Numerous studies have therefore sought to understand how the size of these segments vary with ecology and scale with overall body size.
Alice E. Maher, Philip G. Cox, Thomas W. Maddox, James D. Gardiner, Karl T. Bates   +4 more
wiley   +1 more source

The first description of dinosaurian eggshell from the Maastrichtian Lance Formation, Wyoming, North America [PDF]

Acta Palaeontologica Polonica
Although numerous fossils have been excavated and described from the Upper Cretaceous (Maastrichtian) Lance Formation, eggs and eggshell remains are rare and have yet to be described in detail.
Tom T.P. Van Der Linden, Jonathan J.W. Wallaard, Maarten De Rijke, René H.B. Fraaije   +3 more
doaj   +1 more source

II.—On the Families of Sauropodous Dinosauria [PDF]

Geological Magazine, 1899
The subclass Dinosauria, as known to-day, I have divided into three orders: the Theropoda, or carnivorous forms; the Sauropoda, or herbivorous quadrupedal forms; and the Predentata, also herbivorous, and including several suborders, namely, the Stegosauria and Ceratopsia, both quadrupedal, and the Ornithopoda, containing bipedal bird-like reptiles.
openaire   +1 more source

The phylogeny of Tetanurae (Dinosauria: Theropoda)

Journal of Systematic Palaeontology, 2012
Tetanuran theropods represent the majority of Mesozoic predatory dinosaur diversity and the lineage leading to extant Aves. Thus their history is relevant to understanding the evolution of dinosaur diversity, Mesozoic terrestrial ecosystems, and modern birds.
Carrano, M, Benson, R, Sampson, S
openaire   +1 more source