Egg shape changes at the theropod–bird transition, and a morphometric study of amniote eggs [PDF]
Royal Society Open Science, 2014 The eggs of amniotes exhibit a remarkable variety of shapes, from spherical to elongate and from symmetrical to asymmetrical. We examine eggshell geometry in a diverse sample of fossil and living amniotes using geometric morphometrics and linear ...
D. Charles Deeming, Marcello Ruta
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Origins of Avian Hyperactive Mitochondria, Genome Compaction, and Air-Sac Physiology in Early Theropods During the Carnian Pluvial Episode [PDF]
Journal of Developmental BiologyExtant birds and the earliest dinosaurs may share fundamental metabolic features essential for aerobic exercise, suggesting that the extraordinary physical performance typical of avian species originated when dinosaurs first appeared during the Carnian ...
Takumi Satoh
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Paleobiogeographic evolution and distribution of Carcharodontosauridae (Dinosauria, Theropoda) during the middle Cretaceous of North Africa [PDF]
Papéis Avulsos de Zoologia, 2018 Over the last few decades, the systematics and evolution of carcharodontosaurids, a group of large predatory dinosaurs, from North Africa have been better understood mainly due the discovery of new species.
Carlos Roberto dos Anjos Candeiro +3 more
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Forelimb biomechanics in the derived therizinosaur Nothronychus and its relation to the origin of the avian wing [PDF]
Scientific ReportsTherizinosauria is a clade of extinct unusual maniraptoran theropods. Nothronychus is a derived representative of the clade from the upper Cretaceous Moreno Hill Formation, west-central New Mexico and Tropic Shale, southern Utah.
David K. Smith
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Cranial functional specialisation for strength precedes morphological evolution in Oviraptorosauria [PDF]
Communications BiologyOviraptorosaurians were a theropod dinosaur group that reached high diversity in the Late Cretaceous. Within oviraptorosaurians, the later diverging oviraptorids evolved distinctive crania which were extensively pneumatised, short and tall, and had a ...
Luke E. Meade +3 more
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Caudal pneumaticity and pneumatic hiatuses in the sauropod dinosaurs Giraffatitan and Apatosaurus [PDF]
, 2013 Skeletal pneumaticity is found in the presacral vertebrae of most sauropod dinosaurs, but pneumaticity is much less common in the vertebrae of the tail.
Taylor, Michael P, Wedel, Mathew J.
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New information on paleopathologies in non-avian theropod dinosaurs: a case study on South American abelisaurids [PDF]
BMC Ecology and EvolutionStudies on pathological fossil bones have allowed improving the knowledge of physiology and ecology, and consequently the life history of extinct organisms.
Mattia A. Baiano +3 more
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Bite and tooth marks on sauropod dinosaurs from the Morrison Formation [PDF]
PeerJ, 2023 Tooth-marked bones provide important evidence for feeding choices made by extinct carnivorous animals. In the case of the dinosaurs, most bite traces are attributed to the large and robust osteophagous tyrannosaurs, but those of other large carnivores ...
Roberto Lei +5 more
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New theropod remains and implications for megaraptorid diversity in the Winton Formation (lower Upper Cretaceous), Queensland, Australia [PDF]
Royal Society Open Science, 2020 The holotype specimen of the megaraptorid Australovenator wintonensis, from the Upper Cretaceous Winton Formation (Rolling Downs Group, Eromanga Basin) of central Queensland, is the most complete non-avian theropod found in Australia to date.
Matt A. White +7 more
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Two new compsognathid-like theropods show diversified predation strategies in theropod dinosaurs [PDF]
National Science ReviewXiaolin Wang, Shunxing Jiang, Jin Meng
exaly +2 more sources