Results 31 to 40 of about 912 (199)

A path to gigantism: Three-dimensional study of the sauropodomorph limb long bone shape variation in the context of the emergence of the sauropod bauplan. [PDF]

open access: yesJ Anat, 2022
Our study investigates the limb long bone shape variation of a large sample of sauropodomorph dinosaurs in the context of the emergence of the sauropod bauplan. We highlight a differential emergence of sauropod‐related features, that appear abruptly in the forelimb bones and more gradually in the hindlimb ones.
Lefebvre R   +4 more
europepmc   +2 more sources

Hypothetical lung structure of Brachiosaurus (Dinosauria: Sauropoda) based on functional constraints [PDF]

open access: yesFossil Record, 1999
Comparison of avian and crocodylian lung structure suggests a basic archosaurian structural type, consisting of four rows of chambers that radiate independently from an intrapulmonary bronchus.
S. F. Perry, C. Reuter
doaj   +6 more sources

A new mamenchisaurid from the Upper Jurassic Suining Formation of the Sichuan Basin in China and its implication on sauropod gigantism [PDF]

open access: yesScientific Reports
The Sichuan Basin has yielded abundant sauropod dinosaurs from the Middle-Late Jurassic, and Mamenchisauridae had predominated the dinosaur faunae during the Late Jurassic in the Sichuan Basin.
Xuefang Wei   +12 more
doaj   +2 more sources

Palaeobiology and osteohistology of South African sauropodomorph dinosaurs. [PDF]

open access: yesJ Anat
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.
Toefy FY, Krupandan E, Chinsamy A.
europepmc   +2 more sources

A new gigantic titanosaurian sauropod from the early Late Cretaceous of Patagonia (Neuquén Province, Argentina) [PDF]

open access: yesActa Palaeontologica Polonica, 2023
A new gigantic titanosaur Bustingorrytitan shiva gen. et sp. nov. is described. The four specimens upon which this species is erected come from Neuquén Province, Argentina, from levels of the Huincul Formation (Cenomanian).
MARÍA EDITH SIMÓN, LEONARDO SALGADO
doaj   +1 more source

Novel pneumatic features in the ribs of the sauropod dinosaur Brachiosaurus altithorax [PDF]

open access: yesActa Palaeontologica Polonica, 2023
Pneumatic dorsal ribs are known for many sauropods, but to date costal pneumaticity has received relatively little attention. In particular, the pneumatic ribs of the holotype specimen of Brachiosaurus altithorax have been largely overlooked, although ...
MICHAEL P. TAYLOR, MATHEW J. WEDEL
doaj   +1 more source

Several occurrences of osteomyelitis in dinosaurs from a site in the Bauru Group, Cretaceous of Southeast Brazil. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract This study investigates the occurrence of osteomyelitis in non‐avian dinosaurs, focusing on the Ibirá locality, a site with a high incidence of this pathological condition. We analyzed six new osteopathic sauropod specimens from the Upper Cretaceous of Brazil.
Aureliano T   +3 more
europepmc   +2 more sources

Notes on the axial skeleton of the titanosaur Bonitasaura salgadoi (Dinosauria-Sauropoda) [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2011
Sauropod axial anatomy is particularly important in understanding morphological features and phylogenetic analyses. Spatial arrangement of zygapophyses and rib articulations, as well as their complex laminar development, help to recognize the relative ...
Pablo A. Gallina
doaj   +5 more sources

New information on Late Triassic sauropodomorph dinosaurs provides support for the independent acquisition of postcranial skeletal pneumaticity in avemetatarsalian lineages. [PDF]

open access: yesJ Anat
PSP in early‐branching sauropodomorphs probably evolved first in the neural arches of the posterior cervical vertebrae, expanding anteriorly and posteriorly along the vertebral column. The distribution of PSP in Late Triassic early‐branching sauropodomorphs does not appear to be correlated with body size.
Beeston SL   +5 more
europepmc   +2 more sources

Sauropod Trackway Morphometrics: An Exploratory Study Using Highway A16 Excavation at the Courtedoux-Tchâfouè Track Site (Late Jurassic, NW Switzerland)

open access: yesFrontiers in Earth Science, 2022
Ichnogeneric classification of sauropod trackways is determined using qualitative and quantitative descriptions of morphological parameters. More recently, the validity of several of these parameters has been called into question (e.g., trackway gauge ...
Lara Sciscio   +4 more
doaj   +1 more source

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