Results 71 to 80 of about 2,363 (235)
Journal of Anatomy, Volume 246, Issue 6, Page 948-973, June 2025.The study constructs a 3D whole‐body biomechanical model of the Late Triassic archosaurian reptile Lagosuchus talampayensis, which includes reconstructions of the hindlimb musculature. The process of constructing the model revealed that numerous limb bones curated with the main specimens are from other, as‐yet‐undetermined archosaurs.
Alejandro Otero +2 more
wiley +1 more source
Osteology of the unenlagiid theropod Neuquenraptor argentinus from the Late Cretaceous of Patagonia [PDF]
Acta Palaeontologica Polonica, 2017 Neuquenraptor argentinus was described as the first undoubted deinonychosaurian theropod from Gondwana. The only known specimen is represented by a fragmentary skeleton, including a nearly complete foot, coming from Late Cretaceous beds of Neuquén ...
Federico Brissón Egli +3 more
doaj +1 more source
Neural canal ridges: A novel osteological correlate of postcranial neuroanatomy in dinosaurs
The Anatomical Record, Volume 308, Issue 5, Page 1349-1368, May 2025.Abstract In this article, we document the widespread presence of bony ridges in the neural canals of non‐avian dinosaurs, including a wide diversity of sauropods, two theropods, a thyreophoran, and a hadrosaur. These structures are present only in the caudal vertebrae.
Jessie Atterholt +7 more
wiley +1 more source
Reevaluation of the Dentary Structures of Caenagnathid Oviraptorosaurs (Dinosauria, Theropoda) [PDF]
Scientific Reports, 2018 AbstractAmong the characters of caenagnathid oviraptorosaurians, the lateral occlusal grooves and ridges on the occlusal surface of the jaw bones often receive special attention. Recent studies demonstrated that ontogenetic edentulism is present in caenagnathids, and therefore the lateral occlusal grooves and ridges are vestigial alveoli and ...
Shuo Wang, Qiyue Zhang, Rui Yang
openaire +2 more sources
The Anatomical Record, Volume 307, Issue 12, Page 3685-3716, December 2024.Abstract Recent years have seen increasing scientific interest in whether neuron counts can act as correlates of diverse biological phenomena. Lately, Herculano‐Houzel (2023) argued that fossil endocasts and comparative neurological data from extant sauropsids allow to reconstruct telencephalic neuron counts in Mesozoic dinosaurs and pterosaurs, which ...
Kai R. Caspar +10 more
wiley +1 more source
The wings before the bird: an evaluation of flapping-based locomotory hypotheses in bird antecedents [PDF]
PeerJ, 2016 Background: Powered flight is implicated as a major driver for the success of birds. Here we examine the effectiveness of three hypothesized pathways for the evolution of the flight stroke, the forelimb motion that powers aerial locomotion, in a ...
T. Alexander Dececchi +2 more
doaj +2 more sources
Convergent avialan brain morphology in Sinovenator (Troodontidae, Theropoda)
, 2023 Abstract Multiple modifications to the skull and brain anatomy occurred along the lineage encompassing bird-line theropod dinosaurs and modern birds. Anatomical changes to the endocranium include an enlarged endocranial cavity, relatively larger optic lobe that implies elevated visual acuity, and proportionately smaller olfactory bulbs that ...
Congyu Yu +6 more
openaire +1 more source
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 +7 more
wiley +1 more source
Tunasniyoj, a dinosaur tracksite from the Jurassic-Cretaceous boundary of Bolivia
Anais da Academia Brasileira de Ciências, 2011 Here we report a superbly preserved and profusely represented five-ichnotaxa dinosaur track assemblage near Icla village, 100 km southeast of Sucre, Bolivia.
Sebastián Apesteguía, Pablo A. Gallina
doaj +1 more source
The dentary of Australovenator wintonensis (Theropoda, Megaraptoridae); implications for megaraptorid dentition [PDF]
PeerJ, 2015 Megaraptorid theropods were an enigmatic group of medium-sized predatory dinosaurs, infamous for the hypertrophied claw on the first manual digit. Megaraptorid dentition is largely restricted to isolated teeth found in association with skeletal parts ...
Matt A. White +4 more
doaj +2 more sources