Results 151 to 160 of about 2,538 (164)

A New Nanoid Titanosaur (Dinosauria: Sauropoda) from the Upper Cretaceous of Brazil

Ameghiniana, 2022
. Titanosaurian sauropods are known to exhibit remarkable body size disparity, with some taxa famed for nearing the zenith of terrestrial vertebrate body size. Here, we describe a new titanosaurian – Ibirania parva gen. et sp. nov.
B. Navarro, A. Ghilardi, T. Aureliano, V. D. Díaz, K. Bandeira, André Cattaruzzi, F. V. Iori, A. Martine, A. Carvalho, L. Anelli, M. Fernandes, H. Zaher   +11 more
semanticscholar   +1 more source

A New Ornithopod Dinosaur, Transylvanosaurus platycephalus gen. et sp. nov. (Dinosauria: Ornithischia), from the Upper Cretaceous of the Haţeg Basin, Romania

Journal of Vertebrate Paleontology, 2022
Rhabdodontid dinosaurs were a group of medium-sized iguanodontian ornithopods from the Late Cretaceous of Europe. The uppermost Cretaceous continental deposits from the Haţeg Basin of western Romania yielded a very rich assemblage of vertebrates ...
Felix J. Augustin, Dylan Bastiaans, Mihai D. Dumbravă, Z. Csiki-Sava   +3 more
semanticscholar   +1 more source

Osteohistology of Aucasaurus garridoi (Dinosauria, Theropoda, Abelisauridae): inferences on lifestyle and growth strategy

Historical Biology, 2022
Although osteohistology has proven to be useful to discern several palaeobiological traits and systematics in non-avian dinosaurs, the bone microstructure of several groups (e.g., abelisaurid theropods) is still poorly documented.
M. Baiano, I. Cerda
semanticscholar   +1 more source

Description of the first definitive Corythosaurus (Dinosauria, Hadrosauridae) specimens from the Judith River Formation in Montana, USA and their paleobiogeographical significance

The Anatomical Record, 2022
Despite the long history of research in the late Campanian Judith River Formation in northern Montana, most of the vertebrate fossils are represented by fragmentary remains, making precise taxonomic identifications difficult.
R. Takasaki, Kentaro Chiba, A. Fiorillo, K. Brink, David C Evans, F. Fanti, M. Saneyoshi, A. Maltese, S. Ishigaki   +8 more
semanticscholar   +1 more source

New palaeopathology cases of Allosaurus fragilis (Dinosauria: Theropoda)

Historical Biology, 2022
Here, we describe a pathological sub-adult theropod dinosaur from the Late Jurassic Morrison Formation in Dana Quarry, Wyoming, U.S.A. It exhibits multiple pathologies, involving three dorsal vertebrae, the right scapula and coracoid, and apparent ...
L. Xing, B. Rothschild, Chunlei Du, Donghao Wang, Kexiang Wen, Jiayin Su   +5 more
semanticscholar   +1 more source

Variation in the postcranial pneumaticity in derived titanosaurs (Dinosauria: Sauropoda)

Historical Biology
Currently, only birds have a pneumatic system, but in the past, this was common among several ornithodirans. Within Titanosauria, it was the saltasaurines that showed a high degree of postcranial pneumaticity.
V. Zurriaguz
semanticscholar   +1 more source

A new hadrosaurid (Dinosauria: Ornithischia) from the Late Cretaceous of northern Patagonia and the radiation of South American hadrosaurids

Journal of Systematic Palaeontology, 2021
Here we describe a new hadrosaurid from the Upper Cretaceous (Campanian–Maastrichtian) Allen Formation of Río Negro Province, north-west Patagonia. The new taxon is based on cranial and postcranial elements from subadult and adult specimens.
S. Rozadilla, Federico Brissón-Egli, F. Agnolín, A. Aranciaga-Rolando, F. Novas   +4 more
semanticscholar   +1 more source

A redescription of Lophorhothon atopus (Ornithopoda: Dinosauria) from the Late Cretaceous of Alabama based on new material

, 2021
Diagnostic dinosaur fossils of the southeastern United States are rare discoveries, and even more precious are those fossils that preserve a large portion of a skeleton.
Terry A Gates, J. Lamb
semanticscholar   +1 more source

New Material and Diagnosis of a New Taxon of Alvarezsaurid (Dinosauria, Theropoda) from the Upper Cretaceous Bissekty Formation of Uzbekistan

Journal of Vertebrate Paleontology, 2021
A new alvarezsaurid theropod, Dzharaonyx eski, gen. et sp. nov., is documented by a variety of dissociated but well-preserved postcranial bones from the Upper Cretaceous (Turonian) Bissekty Formation at Dzharakuduk, Uzbekistan.
A. Averianov, H. Sues
semanticscholar   +1 more source

Osteology of Klamelisaurus gobiensis (Dinosauria, Eusauropoda) and the evolutionary history of Middle–Late Jurassic Chinese sauropods

Journal of Systematic Palaeontology, 2020
Fossil-rich deposits from the Middle and Late Jurassic of China have yielded a diverse array of sauropod dinosaurs, including numerous species referred to Mamenchisaurus and Omeisaurus.
Andrew J. Moore, P. Upchurch, P. Barrett, James M. Clark, X. Xing   +4 more
semanticscholar   +1 more source