Psittacosaurus houi, a longer snouted psittacosaurid from the Lower Cretaceous Lujiatun Unit of Yixian Formation, China, with the synonymy of the unresolved genus Hongshanosaurus revisited [PDF]
PeerJThe taxonomic validity of some genera and species within Psittacosauridae has been disputed, including that of Hongshanosaurus houi, which has been synonymized with Psittacosaurus lujiatunensis previously.
Asato Ishikawa +6 more
doaj +2 more sources
CT Segmentation of Dinosaur Fossils by Deep Learning
Frontiers in Earth Science, 2022 Recently, deep learning has reached significant advancements in various image-related tasks, particularly in medical sciences. Deep neural networks have been used to facilitate diagnosing medical images generated from various observation techniques ...
Congyu Yu +5 more
doaj +1 more source
A new, transitional centrosaurine ceratopsid from the Upper Cretaceous Two Medicine Formation of Montana and the evolution of the ‘Styracosaurus-line' dinosaurs [PDF]
Royal Society Open Science, 2020 Ceratopsids are among the most ubiquitous dinosaur taxa from the Late Cretaceous terrestrial formations of the Western Interior of North America, comprising two subfamilies, Chasmosaurinae and Centrosaurinae.
John P. Wilson +2 more
doaj +1 more source
Modularity and heterochrony in the evolution of the ceratopsian dinosaur frill
Ecology and Evolution, 2020 The fossil record provides compelling examples of heterochrony at macroevolutionary scales such as the peramorphic giant antlers of the Irish elk.
Albert Prieto‐Márquez +4 more
doaj +1 more source
Diversity, 2021 The Late Triassic (Norian) outcrops of the Malmros Klint Formation, Jameson Land (Greenland) have yielded numerous specimens of non-sauropod sauropodomorphs.
Victor Beccari +4 more
doaj +1 more source
The postcranial skeleton of Vagaceratops irvinensis (Dinosauria, Ceratopsidae)
Vertebrate Anatomy, Morphology, Palaeontology, 2014 The postcranial skeleton of Vagaceratops (= Chasmosaurus) irvinensis (CMN 41357), lacking only the tail, most of the left front and left hind limbs, and portions of the pelvis, is preserved in articulation.
Robert B Holmes
doaj +3 more sources
High-Latitude Dinosaur Nesting Strategies during the Latest Cretaceous in North-Eastern Russia
Diversity, 2023 Dinosaur eggshell fragments attributed to the oofamilies Spheroolithidae and Prismatoolithidae and recovered from the latest Cretaceous Kakanaut Formation of North-eastern Russia (Chukotka) constitute one of the northernmost records of dinosaur ...
Romain Amiot +8 more
doaj +1 more source
New Bohaiornis-like bird from the Early Cretaceous of China: enantiornithine interrelationships and flight performance [PDF]
PeerJ, 2019 During the last decade, several Bohaiornis-like enantiornithine species—and numerous specimens—have been recognized from the celebrated Jehol Biota of northwestern China.
Luis M. Chiappe +6 more
doaj +2 more sources
A Preliminary Study on the Siphon Mechanism in Giraffe (Giraffa camelopardalis)
Animals, 2022 Adult giraffes reach heights of 4.5 m with a heart-to-head distance of over 2 m, making cranial blood supply challenging. Ultrasound confirmed that the giraffe jugular vein collapses during head movement from ground level to fully erect, negating the ...
Marna Suzanne van der Walt +4 more
doaj +1 more source