Results 21 to 30 of about 181 (119)
, 2022 Published as part of Norman, David B, Baron, Matthew G, Garcia, Mauricio S & Müller, Rodrigo Temp, 2022, Taxonomic, palaeobiological and evolutionary implications of a phylogenetic hypothesis for Ornithischia (Archosauria: Dinosauria), pp. 1273-1309 in Zoological Journal of the Linnean Society 196 (4) on pages 1286-1289, DOI: 10.1093/zoolinnean/zlac062,
Norman, David B +3 more
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The Anatomical Record, Volume 306, Issue 10, Page 2514-2536, October 2023., 2023 Abstract A reversion to secondary quadrupedality is exceptionally rare in nature, yet the convergent re‐evolution of this locomotor style occurred at least four separate times within Dinosauria. Facultative quadrupedality, an intermediate state between obligate bipedality and obligate quadrupedality, may have been an important transitional step in this
Lilian Anderson +4 more
wiley +1 more source
Body mass estimates of an exceptionally complete Stegosaurus (Ornithischia: Thyreophora): comparing volumetric and linear bivariate mass estimation methods. [PDF]
Biol Lett, 2015 Abstract Body mass is a key biological variable, but difficult to assess from fossils. Various techniques exist for estimating body mass from skeletal parameters, but few studies have compared outputs from different methods. Here, we apply several mass estimation methods to an exceptionally complete skeleton of the dinosaur ...
Brassey CA, Maidment SC, Barrett PM.
europepmc +6 more sources
The Anatomical Record, Volume 306, Issue 7, Page 1864-1879, July 2023., 2023 Abstract Paleopathological diagnoses provide key information on the macroevolutionary origin of disease as well as behavioral and physiological inferences that are inaccessible via direct observation of extinct organisms. Here we describe the external gross morphology and internal architecture of a pathologic right second metatarsal (MMNS VP‐6332) of a
Tsogtbaatar Chinzorig +4 more
wiley +1 more source
Palaeontology, Volume 66, Issue 4, July/August 2023., 2023 Abstract Various terrestrial tetrapods convergently evolved to gigantism (large body sizes and masses), the most extreme case being sauropod dinosaurs. Heavy weight‐bearing taxa often show external morphological features related to this condition, but also adequacy in their limb bone inner structure: a spongiosa filling the medullary area and a rather ...
Rémi Lefebvre +2 more
wiley +1 more source
Review of European, Comparative &International Environmental Law, Volume 31, Issue 2, Page 182-198, July 2022., 2022 Abstract Restoring functional ecosystems in Europe inter alia requires restoring large mammal (megafauna) diversity and densities to levels well above the current downgraded state, which results from a human‐driven wave of megafauna extinctions and extirpations in the Late Pleistocene and Holocene.
Arie Trouwborst +1 more
wiley +1 more source
Palaeontology, Volume 65, Issue 3, May/June 2022., 2022 Abstract Little is known about the large‐scale evolutionary patterns of skull size relative to body size, and the possible drivers behind these patterns, in Archosauromorpha. For example, the large skulls of erythrosuchids, a group of non‐archosaurian archosauromorphs from the Early and Middle Triassic, and of theropod dinosaurs are regarded as ...
Jordan Bestwick +8 more
wiley +1 more source
Bone Histology of the Stegosaur Kentrosaurus aethiopicus (Ornithischia: Thyreophora) from the Upper Jurassic of Tanzania [PDF]
The Anatomical Record, 2013 ABSTRACTUsing bone histology, a slow growth rate, uncommon for most dinosaurs, has been interpreted for the highly derived stegosaur Stegosaurus (Ornithischia: Thyreophora) and the basal thyreophoran Scutellosaurus. In this study, we examine whether this slow growth rate also occurs in the more basal stegosaur Kentrosaurus from the Tendaguru beds of ...
Ragna, Redelstorff +3 more
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Internal vascularity of the dermal plates of Stegosaurus (Ornithischia, Thyreophora)
Swiss Journal of Geosciences, 2010 X-ray computed tomography and petrographic thin sectioning were used to study internal features of the plates of the thyreophoran dinosaur Stegosaurus and the osteoderms of Alligator. Infrared thermographic imaging of basking caimans was used to examine possible differential blood flow to osteoderms and other parts of the skin.
James O. Farlow +2 more
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Spanish Journal of Palaeontology, 2021 Se describen por primera vez en España, dos dientes de un Ankylosauria del Cretácico Inferior. El material proviene de la Formación Blesa en La Cantalera (Josa, Teruel), datada con carofitas como Hauteriviense terminal-Barremiense basal. Sus caracteres diagnósticos son el esmalte liso y una base inflada, sin cíngulo.
José Ignacio Canudo +2 more
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