Raethal, H-S. 1975. Partridge,
Quails, and Tragopans. In: Grzimek's Animal Life Encyclopedia. Vol. 7,
Birds I, pp. 473-494. New York: Van Nostrand Reinhold.
Rahm, U, and Thenius, E. 1972. Hyraxes. In: Grzimek's Animal Life
Encyclopedia. Vol. 12, Mammals III, pp. 513-522.New York: Van Nostrand
Reinhold
Rambaud, J. C. 1992. Ecologie bacterienne du tube digestif et defense
de l'organisme. Annales de Gastroenteroloie et d Hepatologie. 28:
263-266.
Rasmussen,
D. T. 1989. The evolution of the Hyracoidea: a review of the fossil
evidence. In The Evolution of the Perissodactyls, ed. D. R. Prothero
and R. M. Schoch. New York: Oxford University Press.
Rawdon, B. B. 1984. Gastrointestinal hormones in birds: morphological,
chemical and developmental aspects. J. Exp. Zool. 232:639-670.
Rawdon, B. B., and Andrew, A. 1981. An immunocytochemical survey
of endocrine cells in the gastrointestinal tract of chicks at
hatching.Cell Tissue Res. 220: 279-292.
Rechkemmer, G, and Engelhardt, W. v. 1993. Absorption and secretion of
electrolytes and short-chain fatty acids in the guinea pigs large
intestine. In Advances in Comparative and Environmental
Physiology, Vol.16, ed. W. Clauss, pp. 139-167. Berlin:
Springer-Verlag.
Reeder, W. G. 1964. The digestive system. In Physiology of
the Amphibia, vol. 1, ed. J. A. Moore, pp. 99-149. New York:
Academic Press.
Reenstra, W. W., Bettencourt, J. D. and Forte, J. G. 1987. Mechanisms
of active Cl- secretion by frog gastric mucosa. Am. J. Physiol. 252:
543-547.
Reisz, R. R. and Seus, H.-D. 1996. Herbivory in late Paleozoic and
early Mesozoic amniote tetrapods. In Sixth North American
Paleontological Convention Abstracts of Papers, ed. J. E. Repetski, p.
323. Knoxville: The Paleontological Society.
Reynolds, D. A. Rajendran, V. M. and Binder, H. J. 1992.
Bicarbonate-stimulated [14]butyrate uptake in basolateral membrane
vesicles of rat distal colon. Gastroenterology 105: 725-732.
Reuss, L. 1991. Salt and water transport by gallbladder
epithelium. In Handbook of Physiology, Sec.6: The
Gastrointestinal System, Vol. 4 Intestinal Absorption and Secretion,
ed. S.G. Schultz, M. Field, R.A. Frizzell and B.B. Rauner, pp.
303-322. Washington, D.C.: American Physiological Society.
Richardson, K. C., and Creed, K. 1981. Aspects of haustral
motility of the stomach of macropods. Proc. Aust. Physiol.
Pharmacol. Soc. 12: 24P.
Richardson, K. C. and Wyburn, R. S. 1983. Electromyographic events in
the stomach of a small kangaroo, the tammer wallaby (Macropus eugenii)
J. Physiol. 342: 453-463.
Richardson, K. C. and Wyburn, R. S. 1988. Electromyography of the
stomach and small intestine of the tammer wallaby, Macropus eugennii,
and the quokka, Setonix brachyurus. Aust. J. Zool. 36: 363-371.
Rieger, I. 1990. Hyenas. In Grzimek’s Encyclopedia of Mammals, Vol.
3. pp. 557-571. New York: McGraw-Hill Publishing Co.
Ridgway, S. H. 1972. Mammals of the Sea. Springfield: Charles C.
Thomas.
Rimmer, D. W. and Wiebe, W. J. 1987. Fermentative microbial digestion
in herbivorous fishes. J. Fish Biol. 31: 229-236.
Roberts, M. C. 1975. The development and distribution of mucosal
enzymes in the small intestine of the foetus and the young foal.
J. Reprod. Fert. (Suppl.) 23: 717-723.
Roberts, R. G., Flannery, T. F. Ayliffi, L. K., Yoshida, H., Olley, J.
M., Pridnuy, E. J., Laslell, G. M., Baynes, A., Smith, M. A., Jones,
R., and Smith, B. L. 2001. New ages for the last Australian megafauna:
Continent-wide extinction about 46,000 years ago, Science 292:
1888-1892.
Robertshaw, D. 1984. The Evolution of Homeothermy: from Dinosaurs to
Man. Special Report 329, Agricultural Experiment Station, University of
Missouri-Columbia.
Robinson, G. B. 1960. The hydrolysis of dipeptides by rat
intestinal extracts. Biochim. Biophys. Acta 44: 386-387.
Roby, D. D. Place, A. R. and Ricklefs, R. E. 1986. Assimilation and
deposition of wax esters in planktivorous sea birds. J. Exp. Zool. 238:
29-41.
Roche, M., and Ruckebusch, Y. 1978. A basic relationship between
gastric and duodenal motilities in chickens. Am. J. Physical.
235: E670-E677.
Roediger,
W. E. W. 1991. Cellular metabolism of short-chain fatty acids in
colonic epithelial cells. In Short-Chain Fatty Acids: Metabolism and
Clinical Importance, ed. A. F. Roche, pp. 67-71. Columbus Ohio: Ross
Laboratories.
Roman, C., and Gonella, J. 1981. Extrinsic control of digestive
tract motility. In Physiology of the Gastrointestinal Tract, Vol.
1, ed. L. R. Johnson, J. Christensen, M. I. Grossman, E. D. Jacobson,
and S. G. Schultz, pp. 289-334. New York: Raven Press.
Romer, A. S. 1966. Vertebrate Paleontology, 3rd ed. Chicago:
University of Chicago Press.
Rose, R. C. 1987. Intestinal absorption of water-soluble
vitamins. In Physiology of the Gastrointestinal Tract, ed. L. R.
Johnson, J. R. Christensen, M. J. Jackson, E. D. Jacobson and J. H.
Walsh, pp. 1581-1596. New York: Raven Press.
Rosen C. 2000. World Resources 2000-2001. People and Ecosystems: The
fraying web of life. Oxford, UK: Elsevier Science. 390 p.
Rübsamen, K. and Engelhardt, W. v. 1978. Bicarbonate secretion and
solute absorption in forestomach of the llama. Am. J. Physiol.
234: E1-E6.
Rübsamen, K., Hume, I. D., and
Engelhardt, W. v. 1982. Physiology of the rock hyrax. Comp.
Biochem. Physiol. 72A: 271-277.
Rübsamen, K., and Kettembeil, S.
1980. Effect of water restriction on
oxygen uptake, evaporative water loss and body temperature of the rock
hyrax. J. Comp. Physiol.B 138: 315-320.
Ruckebusch, Y. 1981. Motor functions of the intestine. In
Advances in Veterinary Science and Comparative Medicine, vol. 25, ed.
C. E. Cornelius and C. F. Simpson, pp. 345-369. New York: Academic
Press.