Results 1 to 10 of about 4,916 (174)

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

Anat 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, Almeida W, Fernandes MA, Ghilardi AM.   +3 more
europepmc   +2 more sources

New perspectives on head and neck allometry and ecomorphology in tetrapods. [PDF]

Biol Rev Camb Philos Soc
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.
Maher AE, Cox PG, Maddox TW, Gardiner JD, Bates KT.   +4 more
europepmc   +2 more sources

The earliest known sauropod dinosaur and the first steps towards sauropod locomotion [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2003
A partial dinosaur skeleton from the Upper Triassic (Norian) sediments of South Africa is described and named Antetonitrus ingenipes. It provides the first informative look at a basal sauropod that was beginning to show adaptations towards graviportal quadrupedalism such as an elongated forelimb, a modified femoral architecture, a shortened metatarsus ...
Yates, AM, Kitching, JW
exaly   +4 more sources

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

J 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, Schwarz D, Upchurch P, Barrett PM, Asbach P, Mannion PD.   +5 more
europepmc   +2 more sources

Caudal pneumaticity and pneumatic hiatuses in the sauropod dinosaurs Giraffatitan and Apatosaurus [PDF]

, 2013
Skeletal pneumaticity is found in the presacral vertebrae of most sauropod dinosaurs, but pneumaticity is much less common in the vertebrae of the tail.
Taylor, Michael P, Wedel, Mathew J.
core   +16 more sources

Forelimb muscle and joint actions in Archosauria: insights from Crocodylus johnstoni (Pseudosuchia) and Mussaurus patagonicus (Sauropodomorpha) [PDF]

, 2017
Many of the major locomotor transitions during the evolution of Archosauria, the lineage including crocodiles and birds as well as extinct Dinosauria, were shifts from quadrupedalism to bipedalism (and vice versa).
Allen, V, Hutchinson, J R, Otero, A, Pol, D   +3 more
core   +18 more sources

New Bathonian (Middle Jurassic) sauropod remains from the Valtos Formation, Isle of Skye, Scotland [PDF]

, 2016
The discovery of a sauropod tooth and a single sauropod footprint from the Valtos Formation supplements our knowledge of these dinosaurs from the Middle Jurassic of the Isle of Skye.
Clark, Neil D.L., Gavin, Patrick
core   +4 more sources

Temporal and phylogenetic evolution of the sauropod dinosaur body plan [PDF]

, 2016
The colossal size and body plan of sauropod dinosaurs are unparalleled in terrestrial vertebrates. However, to date, there have been only limited attempts to examine temporal and phylogenetic patterns in the sauropod bauplan.
Allen, V, Bates, KT, Brusatte, SL, Falkingham, PL, Hutchinson, JR, Mannion, PD, Otero, A, Sellers, WI, Stevens, KA, Sullivan, C   +9 more
core   +4 more sources

Digit-only sauropod pes trackways from China - evidence of swimming or a preservational phenomenon? [PDF]

, 2016
For more than 70 years unusual sauropod trackways have played a pivotal role in debates about the swimming ability of sauropods. Most claims that sauropods could swim have been based on manus-only or manus-dominated trackways.
C Gierliński, C Swanson, D Li, DL Johnson, DM Henderson, DQ Li, DQ Li, H Mallison, H Zhang, HL You, HL You, HL You, J Zhang, JA Wilson, JJ Day, JJ Song, JRA Usherwood, JY Song, KG Hwang, LD Xing, LD Xing, LD Xing, LD Xing, LG Li, LM Ji, LS Ye, M Borsuk-Bialynicka, M Fujita, M Huh, MG Lockley, MG Lockley, MG Lockley, MG Lockley, MG Lockley, MG Lockley, MG Lockley, PL Falkingham, PL Falkingham, PL Falkingham, PL Falkingham, PL Falkingham, R Ezquerra, RM Alexander, RT Bird, S Ishigaki, VF Santos, VF Santos, Y Du, YH Tang, YN Lee   +49 more
core   +4 more sources

Histological evidence for a supraspinous ligament in sauropod dinosaurs [PDF]

, 2015
Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any
Abdalla O, Abdel Meguid EM, Barreto C, Bonaparte JF, Bonaparte JF, Campos D, Casal GA, Casal GA, Cerda IA, Cerda IA, Chinsamy A, Chinsamy-Turan A, Francillon-Vieillot H, García RA, Giménez O, Gomani M, Güner A, Hamdam TA, Hatcher JB, Henderson D, Heylings DJA, Horner JR, Janensch W, Janensch W, Kellner AWA, Mcintosh JS, Morocutti M, Novas FE, Osborn HF, Powell JE, Powell JE, Powell JE, Reid REH, Sandqvist AV, Strocchi R, Yayama T, You H-L, Zhang Y   +37 more
core   +2 more sources