Results 61 to 70 of about 5,452 (162)

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

Biological Reviews, EarlyView.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott, Julia A. Gamble, Caleb Marshall Brown, Kirstin S. Brink   +3 more
wiley   +1 more source

Delapparentia turolensis nov. gen et sp., un nuevo dinosaurio iguanodontoideo (Ornithischia: Ornithopoda) en el Cretácico Inferior de Galve

Estudios 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

Discrete and continuous character-based disparity analyses converge to the same macroevolutionary signa. A case study from captorhinids [PDF]

, 2017
The relationship between diversity and disparity during the evolutionary history of a clade provides unique insights into evolutionary radiations and the biological response to bottlenecks and to extinctions.
Brocklehurst, Neil, Fröbisch, Jörg, Romano, Marco   +2 more
core   +2 more sources

Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae)

Journal of Anatomy, EarlyView.
A three‐dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipanicicorum. The study finds that, potentially like the ancestral archosaur, this taxon was probably quadrupedal, plantigrade and neither strongly sprawling ...
Agustina Lecuona, Emily Keeble, Yuting Lin, John R. Hutchinson   +3 more
wiley   +1 more source

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

Acta 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, JUAN D. PORFIRI, DOMENICA DOS SANTOS, FLAVIO BELLARDINI, MATHEW J. WEDEL   +4 more
doaj   +1 more source

A re-evaluation of the enigmatic dinosauriform Caseosaurus crosbyensis from the Late Triassic of Texas, USA and its implications for early dinosaur evolution [PDF]

Acta Palaeontologica Polonica, 2018
The holotype specimen of the Late Triassic dinosauriform Caseosaurus crosbyensis is redescribed and evaluated phylogenetically for the first time, providing new anatomical information and data on the earliest dinosaurs and their evolution within the ...
Matthew G. Baron, Megan E. Williams
doaj   +1 more source

A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China [PDF]

, 2012
The Early Cretaceous fossil record of large−bodied theropods from Asia is poor, hindering comparison of Asian predatory dinosaur faunas with those from other continents. One of the few large Asian theropod specimens from this interval is a partial skull (
Allain R., Benson R.B J., Benson R.B.J., Bonaparte J.F., Britt B.B., Brusatte S.L., Brusatte S.L., Brusatte S.L., Brusatte S.L., Buffetaut E., Calvo J.O., Carrano M.T., Charig A.J., Coria R.A., Currie P.J., Currie P.J., Dong Z.-M., Gauthier J., Harris J.D., Hutt S., Madsen J.H., Madsen J.H., Marsh O.C., Marsh O.C., Marsh O.C., Milner A., Norell M.A., Powell H.P., Rauhut O.W.M., Rauhut O.W.M., Rauhut O.W.M., Roger B.J. Benson, Sadleir R.W., Sampson S.D., Stephen L. Brusatte, Stromer E., Xing Xu, Xu X.   +37 more
core   +1 more source

Comparative histological analysis of vertebrates reveals Triassic climate variability across southern Pangea

Journal of Anatomy, EarlyView.
Bone tissues of Triassic taxa reveal life history signals consistent with climatic variation across southern Pangea, spanning present‐day Brazil, Argentina, Zimbabwe, and India. Slower growth patterns within the Zimbabwean assemblage suggest a comparatively more arid intracontinental environment than those closer to the coast. Artwork by Andrey Atuchin.
Valerie Trinidad, Darlington Munyikwa, Michel Zondo, Timothy J. Broderick, Sterling J. Nesbitt, Stephen Tolan, Christopher Griffin   +6 more
wiley   +1 more source

Notice of nodosaur (Dinosauria, Ankylosauria) remains from the mid-Cretaceous of Cambridge, England, with comments on cervical half-ring armour [PDF]

, 2014
Three pieces from cervical half-rings of an immature nodosaur, part of a nodosaurid presacral rod and some post-cranial osteoderms from the Cretaceous of Cambridge were studied at the Booth Museum of Natural History, Brighton, UK.
Blows, Blows, Carpenter, Carpenter, Chatwin, Coombs, Eaton, Huxley, Kilbourne, Kirkland, Lambe, Marsh, Maryańska, Matthew, Nopcsa, Nopcsa, Norman, Osborn, Ostrom, Penkalski, Penkalski, Pereda-Suberbiola, Seeley, Seeley, Seeley, Seeley, Unwin, William T. Blows, Ősi   +28 more
core   +1 more source

New perspectives on head and neck allometry and ecomorphology in tetrapods

Biological Reviews, Volume 101, Issue 2, Page 665-694, April 2026.
ABSTRACT The skull and neck are vital parts of the body, influencing feeding ecology, habitat exploitation and locomotion. Numerous studies have therefore sought to understand how the size of these segments vary with ecology and scale with overall body size.
Alice E. Maher, Philip G. Cox, Thomas W. Maddox, James D. Gardiner, Karl T. Bates   +4 more
wiley   +1 more source