Results 71 to 80 of about 2,354 (215)
Diversity, 2023 Turiasauria is a clade of basal sauropod dinosaurs hitherto only known from the Middle Jurassic (Bathonian) to the Lower Cretaceous (Valanginian). A new find of a shed tooth crown from the Lower Jurassic (Pliensbachian), Halse Formation of Bornholm ...
Jesper Milàn, Octávio Mateus
doaj +1 more source
Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
Historical Biology, 2013 Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially in saltasaurines, and compared asymmetry patterns in lateral pneumatic foramina (LPF) between these titanosaurs and avian and non ...
Zurriaguz, Virginia Laura +1 more
openaire +3 more sources
Cautionary tales on the use of proxies to estimate body size and form of extinct animals
Ecology and Evolution, Volume 14, Issue 9, September 2024.Reconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Joel H. Gayford +7 more
wiley +1 more source
Cases of pathological bone growth in Isanosaurus and Spinophorosaurus (Sauropoda)
, 2018 The histology of the long bone of sauropods appears uniform and conservative along the Sauropoda evolutionary tree. One of the main aspects of their bone histology is to exhibit a Fibrolamellar Complex (FLC) in the cortex of their long bones. However, we report Radial Fibrolamellar bone (RFB) in the outer cortex of the humeri of a young adult ...
Jentgen, Benjamin Paul C +2 more
openaire +2 more sources
no Município de Alfredo Marcondes (Estado de São Paulo), Formação Adamantina (Turoniano-Santoniano), Bacia Bauru. [PDF]
, 2007 Sauropod dinosaurs (Titanosauria) remains were collected in Upper Cretaceous sandstones, at Alfredo Marcondes site, Adamantina Formation, São Paulo state. These fossils comprise a fragmentary right femur and a proximal portion of a right tibia. The femur
Carlos Roberto dos Anjos Candeiro +2 more
core
The origin of an invasive air sac system in sauropodomorph dinosaurs
The Anatomical Record, Volume 307, Issue 4, Page 1084-1092, April 2024.Abstract One of the most remarkable features in sauropod dinosaurs relates to their pneumatized skeletons permeated by a bird‐like air sac system. Many studies described the late evolution and diversification of this trait in mid to late Mesozoic forms but few focused on the origin of the invasive respiratory diverticula in sauropodomorphs. Fortunately,
Tito Aureliano +6 more
wiley +1 more source
Egg shape changes at the theropod–bird transition, and a morphometric study of amniote eggs [PDF]
, 2014 The eggs of amniotes exhibit a remarkable variety of shapes, from spherical to elongate and from symmetrical to asymmetrical. We examine eggshell geometry in a diverse sample of fossil and living amniotes using geometric morphometrics and linear ...
Abramoff MD +14 more
core +1 more source
Journal of Comparative Neurology, Volume 532, Issue 3, March 2024.Illustration of the endocranial doming, which can provide a proxy for the brain‐to‐endocranial cavity index, using the endocast of an adult of the iguanodont dinosaur Proa valdearinnoensis as an example. Abstract Although the brain fills nearly the entire cranial cavity in birds, it can occupy a small portion of it in crocodilians.
Fabien Knoll +2 more
wiley +1 more source
Palaeobiodiversity of Sauropoda in the Blesa Formation (Lower Cretaceous) at northeast Spain
Journal of Iberian Geology, 2023 AbstractThe Blesa Formation is one of the richest formations of the Barremian of the Iberian Peninsula in terms of vertebrate biodiversity. In the La Cantalera-1 site more than 32 vertebrate taxa have been identified, but the only sauropod remains are three isolated teeth related to Euhelopodidae. In this paper, all the sauropod material studied so far
E. Medrano-Aguado +2 more
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A new skeleton of Phuwiangosaurus sirindhornae (Dinosauria, Sauropoda) from NE Thailand [PDF]
Geological Society, London, Special Publications, 2009 Abstract A new skeleton of a sauropod dinosaur has been discovered in the Early Cretaceous Sao Khua Formation at Ban Na Khrai in Changwat Kalasin (NE Thailand). All sauropod bones from Ban Na Khrai share all their characteristics with the type specimen of Phuwiangosaurus sirindhornae Martin, Buffetaut &
Suravech Suteethorn +5 more
openaire +2 more sources