Results 11 to 20 of about 4,654 (162)

CT Segmentation of Dinosaur Fossils by Deep Learning

open access: yesFrontiers 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

Dinosaurs from the Santonian–Campanian Atlantic coastline substantiate phylogenetic signatures of vicariance in Cretaceous North America

open access: yesRoyal Society Open Science, 2021
During the Cretaceous, diversifications and turnovers affected terrestrial vertebrates experiencing the effects of global geographical change. However, the poor fossil record from the early Late Cretaceous has concealed how dinosaurs and other ...
Chase Doran Brownstein
doaj   +1 more source

The postcranial skeleton of Vagaceratops irvinensis (Dinosauria, Ceratopsidae)

open access: yesVertebrate 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

Novel track morphotypes from new tracksites indicate increased Middle Jurassic dinosaur diversity on the Isle of Skye, Scotland.

open access: yesPLoS ONE, 2020
Dinosaur fossils from the Middle Jurassic are rare globally, but the Isle of Skye (Scotland, UK) preserves a varied dinosaur record of abundant trace fossils and rare body fossils from this time.
Paige E dePolo   +9 more
doaj   +1 more source

New Bohaiornis-like bird from the Early Cretaceous of China: enantiornithine interrelationships and flight performance [PDF]

open access: yesPeerJ, 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

New Middle to ?Late Jurassic dinosaur tracksites in the Central High Atlas Mountains, Morocco

open access: yesRoyal Society Open Science, 2023
Besides bones, fossil tracks and trackways are important sources of knowledge about dinosaur palaeobiology. Here, we report three new tracksites from two different synclines in the Imilchil area, Central High Atlas, Morocco.
Ahmed Oussou   +7 more
doaj   +1 more source

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]

open access: yesPeerJ
The 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

Dinosaur biomechanics [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2006
Biomechanics has made large contributions to dinosaur biology. It has enabled us to estimate both the speeds at which dinosaurs generally moved and the maximum speeds of which they may have been capable. It has told us about the range of postures they could have adopted, for locomotion and for feeding, and about the problems of blood circulation in ...
openaire   +2 more sources

A new, transitional centrosaurine ceratopsid from the Upper Cretaceous Two Medicine Formation of Montana and the evolution of the ‘Styracosaurus-line' dinosaurs [PDF]

open access: yesRoyal 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

Chemistry and Analysis of Organic Compounds in Dinosaurs

open access: yesBiology, 2022
This review provides an overview of organic compounds detected in non-avian dinosaur fossils to date. This was enabled by the development of sensitive analytical techniques.
Mariam Tahoun   +4 more
doaj   +1 more source

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