Results 1 to 10 of about 176 (88)

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

The Earliest Feathers from the Lower Cretaceous Dabeigou Formation of North Hebei: Implications for the Early Evolution of the Jehol Biota

Integrative Zoology, EarlyView.
This study reports two isolated feather fossils from the Lower Cretaceous Dabeigou Formation in northeastern China. Morphological analyses identified them as the earliest known feathered theropods (potentially including avian) in the Jehol Biota. This finding reveals a complex ecosystem at the dawn of the Jehol Biota, bridging the temporal and faunal ...
Qian Wu, Qian‐Nan Zhang, Dang‐Peng Xi   +2 more
wiley   +1 more source

Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods

Papers in Palaeontology, Volume 10, Issue 6, November/December 2024.
Abstract The Lower Cretaceous Wealden Supergroup of southern England yields a diverse assemblage of theropod dinosaurs, its taxa being represented by fragments in addition to some of the most informative associated skeletons of the European Mesozoic. Spinosaurids, neovenatorid allosauroids, tyrannosauroids and dromaeosaurids are among reported Wealden ...
Chris T. Barker, Lucy Handford, Darren Naish, Simon Wills, Christophe Hendrickx, Phil Hadland, Dave Brockhurst, Neil J. Gostling   +7 more
wiley   +1 more source

A non-avian dinosaur with a streamlined body exhibits potential adaptations for swimming. [PDF]

Commun Biol, 2022
Lee S, Lee YN, Currie PJ, Sissons R, Park JY, Kim SH, Barsbold R, Tsogtbaatar K.   +7 more
europepmc   +1 more source

A newly recognized theropod assemblage from the Lewisville Formation (Woodbine Group; Cenomanian) and its implications for understanding Late Cretaceous Appalachian terrestrial ecosystems. [PDF]

PeerJ, 2022
Noto CR, D'Amore DC, Drumheller SK, Adams TL.   +3 more
europepmc   +1 more source

Rare evidence for 'gnawing-like' behavior in a small-bodied theropod dinosaur. [PDF]

PeerJ, 2021
Brown CM, Tanke DH, Hone DWE.
europepmc   +1 more source

Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods. [PDF]

Sci Rep, 2022
Wang X, Cau A, Guo B, Ma F, Qing G, Liu Y.   +5 more
europepmc   +1 more source

Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures. [PDF]

Nat Commun, 2021
Condamine FL, Guinot G, Benton MJ, Currie PJ.   +3 more
europepmc   +1 more source

Insight into the evolutionary assemblage of cranial kinesis from a Cretaceous bird. [PDF]

Elife, 2022
Wang M, Stidham TA, O'Connor JK, Zhou Z.
europepmc   +1 more source