Results 51 to 60 of about 5,330 (201)

On the Dinosauria of the Cambridge Greensand [PDF]

open access: yesQuarterly Journal of the Geological Society of London, 1879
I ntroductory N ote . The remains of Dinosaurs were for many years very rarely met with in the Cambridge Upper Greensand; and several important parts of the skeleton have never yet been found.
openaire   +2 more sources

Macroevolutionary trends in the Dinosauria: Cope's rule [PDF]

open access: yesJournal of Evolutionary Biology, 2005
AbstractCope's rule is the tendency for body size to increase over time along a lineage. A set of 65 phylogenetically independent comparisons, between earlier and later genera, show that Cope's rule applied in dinosaurs: later genera were on average about 25% longer than the related earlier genera to which they were compared.
TM Keesey   +3 more
openaire   +3 more sources

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

XI.—Classification of the Dinosauria [PDF]

open access: yesAnnals and Magazine of Natural History, 1882
(1882). XI.—Classification of the Dinosauria. Annals and Magazine of Natural History: Vol. 9, No. 50, pp. 79-84.
openaire   +2 more sources

A new, ‘hip’ way to breathe

open access: yeseLife, 2021
Ornithischians, one of the three major groups of dinosaurs, developed a unique mechanism to ensure airflow in the lungs.
Marc R Spencer
doaj   +1 more source

Phylogenetic relationships of the Cretaceous Gondwanan theropods Megaraptor and Australovenator: the evidence afforded by their manual anatomy [PDF]

open access: yes, 2016
General comparisons of the manual elements of megaraptorid theropods are conducted with the aim to enlarge the morphological dataset of phylogenetically useful features within Tetanurae.
Agnolin, Federico   +2 more
core   +1 more source

A well-preserved vertebra provides new insights into rebbachisaurid sauropod caudal anatomical and pneumatic features [PDF]

open access: yesActa Palaeontologica Polonica
Rebbachisauridae is a clade of sauropod dinosaurs whose maximum diversification and abundance are known from the Cretaceous of South America. We describe an anterior caudal vertebra, MDPA-Pv 007, from the Upper Cretaceous of Argentine Patagonia, whose ...
GUILLERMO J. WINDHOLZ   +4 more
doaj   +1 more source

Body temperatures of modern and extinct vertebrates from ^(13)C-^(18)O bond abundances in bioapatite [PDF]

open access: yes, 2010
The stable isotope compositions of biologically precipitated apatite in bone, teeth, and scales are widely used to obtain information on the diet, behavior, and physiology of extinct organisms and to reconstruct past climate.
Eagle, Robert A.   +5 more
core   +2 more sources

Estimating cranial musculoskeletal constraints in theropod dinosaurs [PDF]

open access: yesRoyal Society Open Science, 2015
Many inferences on the biology, behaviour and ecology of extinct vertebrates are based on the reconstruction of the musculature and rely considerably on its accuracy.
Stephan Lautenschlager
doaj   +1 more source

The first Jurassic theropod from the Sergi Formation, Jatobá Basin, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2021
Archosaur osteological remains are abundant in Brazil, particularly from the Triassic and Cretaceous strata, but in Jurassic, the record is predominantly represented by ichnofossils.
KAMILA L.N. BANDEIRA   +5 more
doaj   +1 more source

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