Results 101 to 110 of about 989 (201)

Convoluted nasal passages function as efficient heat exchangers in ankylosaurs (Dinosauria: Ornithischia: Thyreophora).

PLoS ONE, 2018
Convoluted nasal passages are an enigmatic hallmark of Ankylosauria. Previous research suggested that these convoluted nasal passages functioned as heat exchangers analogous to the respiratory turbinates of mammals and birds. We tested this hypothesis by
Jason M Bourke, Wm Ruger Porter, Lawrence M Witmer   +2 more
doaj   +1 more source

Frequency distribution of species body size for three major dinosaur clades: (a) Ornithischia; (b) Sauropodomorpha; and (c) Theropoda.

, 2013
The Sauropodomorpha and Ornithischia are significantly negatively-skewed, while the Theropoda exhibit a bell-shaped distribution (see Table 2). All three clades are best fitted by unimodal distributions.
Eoin J. O’Gorman (293185), David W. E. Hone (115427)   +1 more
core   +1 more source

Reconsidering the status and affinities of the ornithischian dinosaur Tatisaurus oehleri Simmons, 1965

The early Mesozoic fossil fauna collected from the Lower Lufeng Formation of Yunnan Province, China, has attracted considerable interest and attention since its discovery in the late 1930s.
Maidment, S. C. R., Norman, D. B., Butler, R. J.   +2 more
core   +1 more source

Phylogenetic and biogeographical reassessment of Ornithischia (Archosauria, Dinosauria) focusing on Elasmaria (Ornithopoda) [PDF]

O clado Elasmaria representa um grupo de dinossauros ornitísquios herbívoros de pequeno e médio porte, com provável origem no Gondwana durante Cretáceo Inferior, e extinção no final do Cretáceo Superior, no Maastrichtiano.
Santos, Luan Estevão dos
core   +1 more source

First evidence of dinosaurian secondary cartilage in the post-hatching skull of Hypacrosaurus stebingeri (Dinosauria, Ornithischia).

PLoS ONE, 2012
Bone and calcified cartilage can be fossilized and preserved for hundreds of millions of years. While primary cartilage is fairly well studied in extant and fossilized organisms, nothing is known about secondary cartilage in fossils.
Alida M Bailleul, Brian K Hall, John R Horner   +2 more
doaj   +1 more source

Figure 7. Body plan evolution within Ornithischia and character states with phylogenetic importance for the present hypothesis. A in Taxonomic, palaeobiological and evolutionary implications of a phylogenetic hypothesis for Ornithischia (Archosauria: Dinosauria)

, 2022
Figure 7. Body plan evolution within Ornithischia and character states with phylogenetic importance for the present hypothesis. A, skeletal reconstruction of Silesaurus opolensis, a parapredentatan (stem lineage) ornithischian (after Dzik, 2003).
Norman, David B, Garcia, Mauricio S, Müller, Rodrigo Temp, Baron, Matthew G   +3 more
core   +1 more source

Postcranial anatomy ofLesothosaurus diagnosticus(Dinosauria: Ornithischia) from the Lower Jurassic of southern Africa: implications for basal ornithischian taxonomy and systematics

, 2016
Lesothosaurus diagnosticus from the upper Elliot Formation of South Africa and Lesotho (?Hettangian–Sinemurian) is an important early representative of Ornithischia. In previous studies it has been recovered in several positions on the ornithischian tree
Barrett, Paul M., Norman, David B., Baron, Matthew G.   +2 more
core   +2 more sources

Budowa jamy nosowej i gebowej dinozaurów Protoceratopsidae (Ceratopsia, Ornithischia)

, 1986
Snout is very deep and laterally compressed in the Protoceratopsidae. Oral cavity is highly vaulted longitudinally and transversely. It wedges into the middle of the nasal chamber dorsally causing that ventral portion of the latter parallels oral cavity ...
Osmolska, H.
core  

Body mass estimates of an exceptionally complete Stegosaurus (Ornithischia: Thyreophora): comparing volumetric and linear bivariate mass estimation methods [PDF]

, 2015
© 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. The file
Maidment, SC, Brassey, CA, Paul M. Barrett, Maidment, Susannah, Susannah C. R. Maidment, Maidment, SCR, Charlotte A. Brassey, Barrett, Paul, Barrett, PM, Brassey, Charlotte   +9 more
core   +1 more source

English hypsilophodontid dinosaurs (Reptilia: Ornithischia)

, 1975
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source