Results 81 to 90 of about 2,538 (164)

Bone labeling experiments and intraskeletal growth patterns in captive leopard geckos (Eublepharis macularius)

open access: yesJournal of Anatomy, Volume 247, Issue 3-4, Page 542-555, September/October 2025.
In this study, we used fluorochrome labels in captive leopard geckos (Eublepharis macularius) to track bone growth and intraskeletal variability from embryonic to adult growth stages. Overall, the tibia in leopard geckos is the least reliable limb bone to use for skeletochronology and the humerus, radius, and fibula preserve the longest growth record ...
Sierra C. Schlief   +2 more
wiley   +1 more source

Teeth from the Middle Jurassic of Morocco reveal the oldest turiasaurian sauropods from Africa [PDF]

open access: yesActa Palaeontologica Polonica
Readily identifiable based on their large, “spatulate” teeth with diagnostic “heart”-shaped crowns, turiasaurians are non-neosauropodan eusauropods known from varied Jurassic and Cretaceous formations across Laurasia and Gondwana.
D. Cary Woodruff   +11 more
doaj   +1 more source

Intraskeletal histovariability and skeletochronology in an ornithopod dinosaur from the Maestrazgo Basin (Teruel, Spain)

open access: yesJournal of Anatomy, Volume 247, Issue 3-4, Page 643-664, September/October 2025.
Abstract Ornithopods are an extinct group of dinosaurs that were particularly abundant and diverse in the Cretaceous of the Iberian Peninsula, and whose abundance in the Maestrazgo Basin has allowed numerous taxa to be identified over the last decade. Many of these fossil remains are still taxonomically indeterminate and require a more detailed study ...
Juan Maíllo   +4 more
wiley   +1 more source

The first description of dinosaurian eggshell from the Maastrichtian Lance Formation, Wyoming, North America [PDF]

open access: yesActa Palaeontologica Polonica
Although numerous fossils have been excavated and described from the Upper Cretaceous (Maastrichtian) Lance Formation, eggs and eggshell remains are rare and have yet to be described in detail.
Tom T.P. Van Der Linden   +3 more
doaj   +1 more source

Palaeobiology and osteohistology of South African sauropodomorph dinosaurs

open access: yesJournal of Anatomy, Volume 247, Issue 3-4, Page 712-727, September/October 2025.
We found that the transitionary Sauropodiformes show both the traits of rapid growth of derived Sauropoda as well as interrupted growth of early branching Sauropodomorpha. There appears to be much more variation in growth dynamics of Sauropodiformes than initially thought.
Fay‐yaad Toefy   +2 more
wiley   +1 more source

Osteohistological insight into the growth dynamics of early dinosaurs and their contemporaries.

open access: yesPLoS ONE
Dinosauria debuted on Earth's stage in the aftermath of the Permo-Triassic Mass Extinction Event, and survived two other Triassic extinction intervals to eventually dominate terrestrial ecosystems.
Kristina Curry Rogers   +4 more
doaj   +1 more source

A REEXAMINATION OF FOUR PROLACERTIFORMS WITH IMPLICATIONS FOR PTEROSAUR PHYLOGENESIS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2000
Traditionally, pterosaurs have been included within the Archosauriformes and many contemporary workers consider the Pterosauria the sister group to Lagosuchus, Scleromochlus and the Dinosauria.
DAVID PETERS
doaj   +1 more source

Brief review of dinosaur studies and perspectives in Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2000
Dinosaur research is developing at very high rates around the world resulting in several new discoveries that are improving our understanding of this terrestrial reptilian clade.
ALEXANDER W. A. KELLNER   +1 more
doaj   +1 more source

A New Leptoceratopsid (Ornithischia, Ceratopsia) with a Unique Ischium from the Upper Cretaceous of Shandong Province, China.

open access: yesPLoS ONE, 2015
The partial skeleton of a leptoceratopsid dinosaur, Ischioceratops zhuchengensis gen. et sp. nov., was excavated from the bone-beds of the Upper Cretaceous Wangshi Group of Zhucheng, Shandong Province, China.
Yiming He   +6 more
doaj   +1 more source

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