Results 31 to 40 of about 695 (133)

Mountain building triggered late cretaceous North American megaherbivore dinosaur radiation.

open access: yesPLoS ONE, 2012
Prior studies of Mesozoic biodiversity document a diversity peak for dinosaur species in the Campanian stage of the Late Cretaceous, yet have failed to provide explicit causal mechanisms.
Terry A Gates   +2 more
doaj   +1 more source

Delapparentia turolensis nov. gen et sp., un nuevo dinosaurio iguanodontoideo (Ornithischia: Ornithopoda) en el Cretácico Inferior de Galve

open access: yesEstudios Geologicos, 2011
Se redescribe un esqueleto postcraneal de dinosaurio ornitópodo asignado por Albert de Lapparent en 1960 a Iguanodon bernissartensis. Procede del yacimiento de La Maca 3, de edad Barremiense inferior (Formación Camarillas), y consta de varias vértebras ...
J. I. Ruiz-Omeñaca
doaj   +1 more source

Forearm orientation in Hadrosauridae (Dinosauria: Ornithopoda) and implications for museum mounts [PDF]

open access: yesPalaeontologia Electronica, 2012
Skeletons of hadrosaurids (“duck-billed dinosaurs”) are usually mounted with palms facing caudally (posteriorly). To achieve this, the radius is articulated with the medial (ulnar) condyle of the humerus instead of the lateral (radial) condyle, which would be unique among vertebrates if it were correct.
openaire   +1 more source

Osseous paleopathologies of Bonapartesaurus rionegrensis (Ornithopoda, Hadrosauridae) from Allen Formation (Upper Cretaceous) of Patagonia Argentina

open access: yesCretaceous Research, 2021
Abstract The paleopathological record provides relevant information about paleobiology and paleoecology of fossil organisms. Based on the information obtained from paleopathologies, it is possible to infer how these injuries affected inter- and intraspecific relationships among organisms, and their interaction with the environment.
Penélope Cruzado-Caballero   +3 more
openaire   +3 more sources

Arcosaurios (Crocodilia, Dinosauria) del Cretácico superior de la Conca de Tremp (Lleida, España)

open access: yesEstudios Geologicos, 1987
El estudio de gran parte del material hallado en los trabajos de excavación realizados por un equipo del «Institut de Paleontología de Sabadell» y otros paleontólogos de las Universidades de Madrid y Bellaterra, en la cuenca de Tremp (Maastrichtiense ...
Mª L. Casanovas   +3 more
doaj   +1 more source

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

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

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

open access: yesFrontiers 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

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

open access: yesDiversity
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   +4 more
doaj   +1 more source

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

open access: yesPalaeontology, 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   +3 more
wiley   +1 more source

BIOGEOGRAPHIC HISTORIES AND CHRONOLOGIES OF DERIVED IGUANODONTIANS

open access: yesPublicación 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  

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