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The physiology of dinosaurs has historically been a controversial subject, particularly their thermoregulation.Recently, many new lines of evidence have been brought to bear on dinosaur physiology generally, including not only metabolic systems and thermoregulation, but on respiratory and cardiovascular systems as well.
One of the greatest contributions to the modern understanding of dinosaur physiology has been paleohistology, the study of microscopic tissue structure in dinosaurs. [ 211 ] [ 212 ] From the 1960s forward, Armand de Ricqlès suggested that the presence of fibrolamellar bone—bony tissue with an irregular, fibrous texture and filled with blood ...
The growing consensus about the endothermy of dinosaurs (see dinosaur physiology) helps to understand their full extinction in contrast with their close relatives, the crocodilians. Ectothermic ("cold-blooded") crocodiles have very limited needs for food (they can survive several months without eating), while endothermic ("warm-blooded ...
This is a list of dinosaurs whose remains have been recovered from Asia, excluding India, which was part of a separate landmass for much of the Mesozoic ...
Massospondylus (/ ˌ m æ s oʊ ˈ s p ɒ n d ɪ l ə s / MASS-oh-spon-di-lus [1]) is a genus of sauropodomorph dinosaur from the Early Jurassic (Hettangian to Pliensbachian ages, ca. 200–183 million years ago). It was described by Sir Richard Owen in 1854 from remains discovered in South Africa, and is thus one of
The find has great importance because the relative positions of internal organs of dinosaurs could only be guessed at before this discovery. The holotype specimen thus provides unique direct information about the physiology of non-avian dinosaurs, especially regarding the digestion , the respiration and the ontogenesis .
Non-avian Dinosaurs are a group of reptiles that dominated terrestrial ecosystems for over 160 million years, from around until , at the end of the Cretaceous period, [1] when all non-avian dinosaurs became extinct. Their remains have been found on every continent, including Antarctica.
James Farlow (1987) calculates that an Apatosaurus-sized dinosaur about 35 t (34 long tons; 39 short tons) would have possessed 5.7 t (5.6 long tons; 6.3 short tons) of fermentation contents, though he cautions that the regression equation being used is based on living mammals which are much smaller and physiologically different. [75]