Results 21 to 30 of about 239 (114)

Mandibular biomechanics of Acheroraptor temertyorum (Theropoda: Dromaeosauridae) with implications for the feeding ecology and behaviour

Mesozoic
Acheroraptor temertyorum is a dromaeosaurid theropod, probably a saurornitholestine, found in the upper Maastrichtian Hell Creek Formation of Montana. This enigmatic dromaeosaurid is known from only a partial maxilla and dentary, as well as referred isolated teeth, making even the general aspects of its palaeobiology largely elusive. In this work, beam
Chan‐gyu Yun
openalex   +3 more sources

Skull of a dromaeosaurid dinosaur Shri devi from the Upper Cretaceous of the Gobi Desert suggests convergence to the North American forms

Acta Palaeontologica Polonica, 2023
Numerous dromaeosaurid taxa recovered from the Upper Cretaceous strata of the Gobi Desert raise questions over niche partitioning among closely related species.
ŁUKASZ CZEPIŃSKI
doaj   +1 more source

Iridescent plumage in a juvenile dromaeosaurid theropod dinosaur

Acta Palaeontologica Polonica, 2023
Colour reconstructions have provided new insights into the lives of dinosaurs and other extinct animals, by predicting colouration patterns from fossilised pigment-bearing organelles called melanosomes.
ANGUS D. CROUDACE, CAIZHI SHEN, JUNCHANG LÜ, STEPHEN L. BRUSATTE, JAKOB VINTHER   +4 more
doaj   +1 more source

Modified skulls but conservative brains? The palaeoneurology and endocranial anatomy of baryonychine dinosaurs (Theropoda: Spinosauridae)

Journal of Anatomy, Volume 242, Issue 6, Page 1124-1145, June 2023., 2023
Spinosaurids were unusual large‐bodied tetanuran theropods with semi‐aquatic ecologies. The neuroanatomy of baryonychine spinosaurids has yet to be studied, and may inform about the early evolution of the spinosaurid brain and sensory capabilities. With unexceptional hearing and olfaction, baryonychine endocasts share morphological similarities with ...
Chris Tijani Barker, Darren Naish, Jacob Trend, Lysanne Veerle Michels, Lawrence Witmer, Ryan Ridgley, Katy Rankin, Claire E. Clarkin, Philipp Schneider, Neil J. Gostling   +9 more
wiley   +1 more source

Machine learning confirms new records of maniraptoran theropods in Middle Jurassic UK microvertebrate faunas

Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023
Abstract Current research suggests that the initial radiation of maniraptoran theropods occurred in the Middle Jurassic, although their fossil record is known almost exclusively from the Cretaceous. However, fossils of Jurassic maniraptorans are scarce, usually consisting solely of isolated teeth, and their identifications are often disputed.
Simon Wills, Charlie J. Underwood, Paul M. Barrett, Philip Mannion   +3 more
wiley   +1 more source

The furculae of the dromaeosaurid dinosaur Dakotaraptor steini are trionychid turtle entoplastra [PDF]

PeerJ, 2016
Dakotaraptor steini is a recently described dromaeosaurid dinosaur from the Upper Cretaceous (Maastrichtian) Hell Creek Formation of South Dakota. Included within the D.
Victoria M. Arbour, Lindsay E. Zanno, Derek W. Larson, David C. Evans, Hans-Dieter Sues   +4 more
doaj   +2 more sources

Anatomy and relationships of the early diverging Crocodylomorphs Junggarsuchus sloani and Dibothrosuchus elaphros

The Anatomical Record, Volume 305, Issue 10, Page 2463-2556, October 2022., 2022
Abstract The holotype of Junggarsuchus sloani, from the Shishugou Formation (early Late Jurassic) of Xinjiang, China, consists of a nearly complete skull and the anterior half of an articulated skeleton, including the pectoral girdles, nearly complete forelimbs, vertebral column, and ribs.
Alexander A. Ruebenstahl, Michael D. Klein, Hongyu Yi, Xing Xu, James M. Clark   +4 more
wiley   +1 more source

Feeding habits of the Middle Triassic pseudosuchian Batrachotomus kupferzellensis from Germany and palaeoecological implications for archosaurs

Palaeontology, Volume 65, Issue 3, May/June 2022., 2022
Abstract Bite traces on fossil bones are key to deciphering feeding ecology and trophic interactions of vertebrate past ecosystems. However, similarities between traces produced by different carnivorous taxa with similar dentitions, and misidentifications due to equifinality, hinder confident identifications of the bite makers.
Eudald Mujal, Christian Foth, Erin E. Maxwell, Dieter Seegis, Rainer R. Schoch, David Button   +5 more
wiley   +1 more source

Upper Cretaceous European theropod palaeobiodiversity, palaeobiogeography and the intra‐Maastrichtian faunal turnover: new contributions from the Iberian fossil site of Laño

Papers in Palaeontology, Volume 8, Issue 1, January/February 2022., 2022
Abstract A total of 227 theropod teeth have so far been recovered from the upper Campanian Laño site (northern Iberian Peninsula). The teeth were studied for their qualitative and quantitative features. From the theropod sample found at Laño, seven morphotypes attributed to five taxa are identified: a medium to large abelisaurid (Arcovenator sp.) and ...
Erik Isasmendi, Angelica Torices, José Ignacio Canudo, Philip J. Currie, Xabier Pereda‐Suberbiola, David Button   +5 more
wiley   +1 more source

The first dromaeosaurid (Dinosauria: Theropoda) from the Lower Cretaceous Bayan Gobi Formation of Nei Mongol, China [PDF]

PeerJ, 2015
The first dromaeosaurid theropod from the Lower Cretaceous Bayan Gobi Formation is identified based on an incompletely preserved partially-articulated left leg, increasing the known diversity of its understudied ecosystem.
Michael Pittman, Rui Pei, Qingwei Tan, Xing Xu   +3 more
doaj   +2 more sources