Results 31 to 40 of about 116 (91)

The genera and species of the Trachodontidae (Hadrosauridae, Claosauridae) Marsh

Annals of the Carnegie Museum, 1902
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, Volume 101, Issue 4, Page 1760-1778, August 2026.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

Maiasaura (Dinosauria: Hadrosauridae) Tibia Osteohistology Reveals Non-annual Cortical Vascular Rings in Young of the Year

Frontiers in Earth Science, 2019
Annually, tetrapod vertebrate bone apposition is briefly interrupted, which typically coincides with the yearly environmental nadir. The temporary appositional hiatus is histologically recorded in bone cortex as a hypermineralized ring termed a line of ...
Holly N. Woodward
doaj   +1 more source

ENHYDROSS: A New Mechanistic Model Supports the Trans‐Oceanic Dispersal Capability of Terrestrial Vertebrates

Ecology and Evolution, Volume 16, Issue 4, April 2026.
We introduce ENHYDROSS, a new mechanistic model that uses optimal swimming speed and minimum cost of transport to estimate maximum dispersal distances and durations for vertebrates, enabling assessment of long‐distance oceanic dispersal potential. Applied to a range of extant and extinct animals, the model's estimates generally align with observed data;
Alexandros Pantelides, Paul Upchurch, Philip D. Mannion, Elias Gravanis, Donald M. Henderson, Phaedon Kyriakidis   +5 more
wiley   +1 more source

Coahuilasaurus lipani, a New Kritosaurin Hadrosaurid from the Upper Campanian Cerro Del Pueblo Formation, Northern Mexico

Diversity
The Late Cretaceous of Western North America (Laramidia) supported a diverse dinosaur fauna, with duckbilled dinosaurs (Hadrosauridae) being among the most speciose and abundant members of this assemblage.
Nicholas R. Longrich, Angel Alejandro Ramirez Velasco, Jim Kirkland, Andrés Eduardo Bermúdez Torres, Claudia Inés Serrano-Brañas   +4 more
doaj   +1 more source

The early origin of Iguanodontia: new insights into the macroevolution, diversity and biogeography of the clade

Palaeontology, Volume 69, Issue 2, 2026.
Abstract Iguanodontia (Dinosauria, Ornithischia) is a speciose group of herbivorous dinosaurs that include the famous genus Iguanodon, one of foundational members of the clade Dinosauria. Despite their very long history of research, several aspects of their systematic relationships and their evolutionary history remain somewhat nebulous.
Filippo Maria Rotatori, Alfio Alessandro Chiarenza, Federico Fanti, Miguel Moreno‐Azanza   +3 more
wiley   +1 more source

BIOGEOGRAPHIC HISTORIES AND CHRONOLOGIES OF DERIVED IGUANODONTIANS

Publicación Electrónica de la Asociación Paleontológica Argentina, 2015
The geographic distributions, chronology, and phylogenetic relationships of derived iguanodontians describe a biogeographic history of active intercontinental dispersal, which is tested via comparison with eustatic sea level fluctuations.
Jason J. Head, Yoshitsugu Kobayashi
doaj  

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

Journal 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, Jerome Hidalgo‐Sanz, José Manuel Gasca, José Ignacio Canudo, Miguel Moreno‐Azanza   +4 more
wiley   +1 more source

Skull morphology and histology indicate the presence of an unexpected buccal soft tissue structure in dinosaurs

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, Yan‐yin Wang, Thomas W. Dudgeon, Mark J. Powers, S. Amber Whitebone, Colton C. Coppock, Aaron D. Dyer, Corwin Sullivan   +7 more
wiley   +1 more source

Epidermal scale growth, allometry and function in non‐avian dinosaurs and extant reptiles

Journal of Anatomy, Volume 247, Issue 2, Page 250-283, August 2025.
Scale shapes in non‐avian dinosaurs and extant reptiles are mostly retained through growth. However, positive scale allometry and proportional differences in scale breadth are also detected, which are likely associated with changing body proportions. Based on their generally conserved morphology and impracticality for visual display, the enlarged size ...
Nathan James Enriquez, Nicolás E. Campione, Christophe Hendrickx, Phil R. Bell   +3 more
wiley   +1 more source