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1983 | 28 | 1-2 |

Tytuł artykułu

Dinosaurs, mammals, and Mesozoic taphonomy

Autorzy

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Predation is an important mode by which animals enter the fossil record. Reptilian and amphibian digestive systems decalcify prey, whereas those of small mammalian predators do not. The origin of endothermy in the fossil record should be marked by abundant, undecalcifled coprocoenoses. If predacious dinosaurs were endothermic, microvertebrate coprocoenoses produced by them should reflect this. Ectothermic warm-bloodedness in dinosaurs could have resulted from high ambient temperatures, at least during the Cretaceous. An elevated body temperature in reptiles may be more important for digestion than for levels of activity. A short-term lowering of temperatures at the end of the Cretaceous could have induced digestive failure in reptiles, without affecting other physiological activities. A trend toward giantism in herbivores may be a means of processing forage high in cellulose.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

28

Numer

1-2

Opis fizyczny

p.209-213,ref.

Twórcy

autor
  • Department of Biology, New York University, New York, NY 10003 USA

Bibliografia

  • BARRON, E. J., THOMPSON, S. L. and SCHNEIDER, S. H. 1981. An ice-free Cretaceous? Results from climate model simulations. — Science, 212, 501—508.
  • DODSON, P. and WEXLAR, D. 1979. Taphonomic investigations of owl pellets.— Paleobiology, 5, 275—284.
  • FISHER, D. C. 1981. Crocodilian scatology, microvertebrate concentrations, and enemel-less teeth. — Ibidem, 7, 262—275.
  • HEINRICH, В. 1977. Why have some animals evolved to regulate a high body temperature? — Amer. Natur., 111, 623—640.
  • KÜHNE, W. G. 1956. The Liassic therapsid Oligokyphus. Brit. Mus. (Nat. Hist.), x+149 pp. Trustees British Museum, London.
  • MAYHEW, D. F. 1977. Avian predators as accumulators of fossil mammal material. — Boreas, 6, 25—31.
  • MCNAB, B. 1978. The evolution of endothermy in the phylogeny of mammals. — Amer. Natur., 112, 1—21.
  • MELLETT, J. S. 1974. Scatological origin of microvertebrate fossil accumulations.— Science, 185, 349—350.
  • OSTROM, J. 1980. The evidence for endothermy in dinosaurs. In: R. D. K. Thomas and E. C. Olson (eds.), A Cold Look at the Warm-Blooded Dinosaurs. — AAAS Selected Symposium, 28, 15—54. Westview Press, Boulder, Colorado.
  • SKOCZYLAS, R. 1970. Influence of temperature on gastric digestion in the grass snake Natrix natrix L. — Comp. Biochem. Physiol., 33, 793—804.
  • SKOCZYLAS, R. 1978. Physiology of the digestive tract. In: C. Gans and K. A. Gans (eds.), Biology of the Reptilia, 8, 589—717. Academic Press, New York.
  • STEPHENS, С. E. 1977. Comparative physiology of the digestive system. In: M. J. Swenson (ed.), Dukes’ Physiology of Domestic Animals, 216—232. Comstock Press, Ithaca, New York.
  • THOMAS, R. D. K. and OLSON, E. C. (eds.). 1980. A Cold Look at the Warm-Blooded Dinosaurs. — AAAS Selected Symposium, 28, 514 pp. Westview Press, Boulder, Colorado.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-06184358-3676-4841-965d-7d39519688bd
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