Results 21 to 30 of about 345 (147)

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

open access: yesPeerJ, 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   +4 more
doaj   +2 more sources

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

open access: yesJournal 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   +9 more
wiley   +1 more source

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

open access: yesPapers 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   +3 more
wiley   +1 more source

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

open access: yesThe 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   +4 more
wiley   +1 more source

A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America [PDF]

open access: yesProceedings of the National Academy of Sciences, 2009
The fossil assemblages of the Late Cretaceous of North America are dominated by large-bodied dinosaur species. Associated skeletons of small dinosaurs are exceedingly rare, and small (<10 kg) carnivorous theropods have not previously been reported from these beds.
Nicholas R, Longrich, Philip J, Currie
openaire   +2 more sources

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

open access: yesPalaeontology, 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   +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

open access: yesPapers 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   +5 more
wiley   +1 more source

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

open access: yesPeerJ, 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   +3 more
doaj   +2 more sources

Dromaeosauridae Morphotype A. [PDF]

open access: yes, 2014
A–G, tooth of cf. Dromaeosauridae Morphotype A (NMMNH P-27481) from the Hosta Tongue, Point Lookout Sandstone showing lingual side of distal carina (A), lingual (B), lingual side mesial carina (C); labial (D), basal (E), labial side of distal carina (F),
Stephen L. Brusatte (134303)   +1 more
core   +1 more source

A dromaeosaurid-like claw from the Upper Cretaceous of southern France [PDF]

open access: yes, 2022
Dromaeosaurids are poorly known in Europe and their fossil records are mostly postcranial remains. To date, the French faunal records of the family Dromaeosauridae include two taxa: Pyroraptor olympius and Variraptor mechinorum.
Tainá Constância de França (12214703)   +6 more
core   +1 more source

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