Results 71 to 80 of about 3,472 (207)
Redescription and affinities of Hulsanpes perlei (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia [PDF]
PeerJ, 2018 Hulsanpes perlei is an enigmatic theropod dinosaur from the Baruungoyot Formation (?mid- to upper Campanian, Upper Cretaceous) of Mongolia. It was discovered in 1970, during the third Polish-Mongolian paleontological expedition to the Nemegt Basin.
Andrea Cau, Daniel Madzia
doaj +2 more sources
New perspectives on body size and shape evolution in dinosaurs
Biological Reviews, Volume 100, Issue 5, Page 1829-1860, October 2025.ABSTRACT Diversity in the body shapes and sizes of dinosaurs was foundational to their widespread success during the Mesozoic era. The ability to quantify body size and form reliably is therefore critical to the study of dinosaur biology and evolution.
Matthew Dempsey +4 more
wiley +1 more source
The anatomy and systematic position of the theropod dinosaur Chilantaisaurus tashuikouensis Hu, 1964 from the Early Cretaceous of Alanshan, People's Republic of China [PDF]
, 2008 There is little consensus on the systematic position of the colossal theropod dinosaur Chilantaisaurus tashuikouensis from the Cretaceous (Aptian–?Albian or Upper Cretaceous) Ulansuhai Formation of Inner Mongolia, which has been recovered as a derived ...
Barsbold +27 more
core +1 more source
Osteohistology of the unusually fast‐growing theropod dinosaur Ceratosaurus
Journal of Anatomy, Volume 247, Issue 3-4, Page 765-789, September/October 2025.We report the histology of multiple elements attributed to four individuals of Ceratosaurus. We find that the histology and growth models corroborate previous reports of rapid tissue growth in the genus. Abstract Ceratosaurus is a large‐bodied non‐avian theropod dinosaur known from the Upper Jurassic Morrison Formation of North America and is ...
Riley Sombathy +2 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
Journal of Anatomy, Volume 247, Issue 3-4, Page 790-818, September/October 2025.A combined approach of osteology and histology was used to examine the cheek regions of dinosaurs. Strong evidence was found for a soft tissue in this region connecting the zygoma to the mandible, here named the ‘exoparia’. Abstract Unlike mammals, reptiles typically lack large muscles and ligaments that connect the zygoma to the mandible.
Henry S. Sharpe +7 more
wiley +1 more source
Basal abelisaurid and carcharodontosaurid theropods from the Lower Cretaceous Elrhaz Formation of Niger [PDF]
, 2008 We report the discovery of basal abelisaurid and carcharodontosaurid theropods from the mid Cretaceous (Aptian–Albian, ca. 112 Ma) Elrhaz Formation of the Niger Republic. The abelisaurid, Kryptops palaios gen. et sp.
Brusatte, S.L., Sereno, P.C.
core +1 more source
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
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
Systematic Entomology, Volume 50, Issue 3, Page 630-645, July 2025.We describe †Cretovelona orussopteryx n. gen. & sp. from Kachin amber. The fossil is examined with synchrotron scanning and integrated into an existing morphological data set for Orussoidea. This fossil parasitoid wasp displays a unique character combination demonstrating intermediate conditions in evolving the complex features employed in echo ...
Lars Vilhelmsen +4 more
wiley +1 more source