Results 51 to 60 of about 2,538 (164)

Taxonomic Status of Nanotyrannus lancensis (Dinosauria: Tyrannosauroidea)—A Distinct Taxon of Small-Bodied Tyrannosaur

Fossil Studies
Tyrannosaurs are among the most intensively studied and best-known dinosaurs. Despite this, their relationships and systematics are highly controversial.
N. Longrich, E. Saitta
semanticscholar   +1 more source

A new brachylophosaurin (Dinosauria: Hadrosauridae) from the Upper Cretaceous Menefee Formation of New Mexico

PeerJ, 2021
Brachylophosaurini is a clade of hadrosaurid dinosaurs from the Campanian of western North America. Although well-known from northern localities in Montana and Alberta, including abundant material of Brachylophosaurus canadensis and Maiasaura peeblesorum
A. McDonald, D. G. Wolfe, Elizabeth Freedman Fowler, Terry A Gates   +3 more
semanticscholar   +1 more source

Untangling the tree or unravelling the consensus? Recent developments in the quest to resolve the broad-scale relationships within Dinosauria

Journal of Systematic Palaeontology
The phylogenetic relationships of the major lineages within Dinosauria have come under intense scrutiny in recent years. In 2017, a radical new hypothesis of early dinosaur evolution, the ‘Ornithoscelida hypothesis’, was proposed, prompting a flurry of ...
Jack Lovegrove, Paul Upchurch, Paul M. Barrett   +2 more
semanticscholar   +1 more source

A New Dromaeosaurid (Dinosauria: Coelurosauria) from Khulsan, Central Mongolia

American Museum Novitates, 2021
Dromaeosaurid theropods represent a rare but important clade of nonavialan dinosaurs. Their close evolutionary relationship to modern birds has placed them at the center of paleontological research for the last several decades.
James G. Napoli, Alexander A Ruebenstahl, Bhart‐Anjan S. Bhullar, A. Turner, M. Norell   +4 more
semanticscholar   +1 more source

Osteological redescription of the holotype of Plateosaurus trossingensis (Dinosauria: Sauropodomorpha) from the Upper Triassic of SW Germany and its phylogenetic implications

Journal of Systematic Palaeontology
Plateosaurus von Meyer, 1837, from the Norian of central Europe, was one of the first named dinosaurs. With close to 200 referred specimens found all over central Europe, it is one of the best-known dinosaurs from Europe.
Joep Schaeffer
semanticscholar   +1 more source

A new basal hadrosaurid (Dinosauria: Ornithischia) from the latest Cretaceous Kita-ama Formation in Japan implies the origin of hadrosaurids

Scientific Reports, 2021
Here we describe a partial hadrosaurid skeleton from the marine Maastrichtian Kita-ama Formation in Japan as a new taxon, Yamatosaurus izanagii gen. et sp. nov., based on unique characters in the dentition.
Y. Kobayashi, R. Takasaki, K. Kubota, A. Fiorillo   +3 more
semanticscholar   +1 more source

A new oviraptorosaur (Dinosauria: Theropoda) from the end-Maastrichtian Hell Creek Formation of North America

PLoS ONE
Caenagnathidae is a clade of derived, Late Cretaceous oviraptorosaurian theropods from Asia and North America. Because their remains are rare and often fragmentary, caenagnathid diversity is poorly understood. Anzu wyliei is the only caenagnathid species
K. Atkins-Weltman, D. Simon, Holly Woodward, Gregory G. Funston, Eric Snively   +4 more
semanticscholar   +1 more source

Cranial Anatomy of New Specimens of Saurornitholestes langstoni (Dinosauria, Theropoda, Dromaeosauridae) from the Dinosaur Park Formation (Campanian) of Alberta

The Anatomical Record, 2020
The holotype of the dromaeosaurid Saurornitholestes langstoni was described in 1978 on the basis of fewer than 30 associated cranial and postcranial bones of a single individual from Dinosaur Provincial Park.
P. Currie, David C Evans
semanticscholar   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

The Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano, Aline M. Ghilardi, Jonatan Kaluza, Agustín G. Martinelli   +3 more
wiley   +1 more source

The axial skeleton of Bagualia alba (Dinosauria: Eusauropoda) from the Early Jurassic of Patagonia

Palaeontologia Electronica, 2021
Sauropod dinosaurs were the dominant large-bodied herbivores in many Mesozoic terrestrial ecosystems. Such predominance took place after a faunal replacement event linked to a global environmental change during the Early Jurassic (Pliensbachian–Toarcian),
K. Gomez, J. Carballido, D. Pol
semanticscholar   +1 more source