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Nagy, KA and GG Montgomery. 1980. Field metabolic rate, water flux, and food consumption in three-toed sloths (Bradypus variegatus). Journal of Mammalogy 61(3): 465-472.

Naples, VL 1980. Cranial morphology and evolution of the sloths.  Ph.D. Dissertation, University of Massachusetts, Amherst, Massachusetts. 237 pp.

––– 1982. Cranial osteology and function in the tree sloths, Bradypus and Choloepus. American Museum Novitates 2739: 1-41.

––– 1985a. Form and function of the masticatory musculature in the tree sloths, Bradypus and Choloepus. Journal of Morphology 183:25-50.

––– 1985b. The superficial facial musculature in sloths and vermilinguas (anteaters). In GG Montgomery (ed.), The Evolution and Ecology of Armadillos, Sloths, and Vermilinguas. Smithsonian Institution Press, Washington, D.C. Pp. 173-189.

––– 1986. The morphology and function of the hyoid region in the tree sloths, Bradypus and Choloepus. Journal of Mammalogy 67: 712-724.

––– 1987a. Reconstruction of cranial morphology and analysis of function in the Pleistocene ground sloth Nothrotheriops shastense (Mammalia, Megatheriidae). Contributions in Science, Natural History Museum of Los Angeles County 389: 1-21.

––– 1989. The feeding mechanism in the Pleistocene ground sloth, Glossotherium. Contributions in Science, Natural History Museum of Los Angeles County 415: 1-23.

––– 1990. Morphological changes in the facial region and a model of dental growth and wear pattern development in Nothrotheriops shastensis. Journal of Vertebrate Paleontology 10(3): 372-389.

––– 1995. The artificial generation of wear patterns on tooth models as a means to infer mandibular movement during feeding in mammals. In: Functional morphology in vertebrate Paleontology. Cambridge: Cambridge University Press. p. 137–150.

––– and RK McAfee. 2012. Reconstruction of the cranial musculature and masticatory function of the Pleistocene panamerican ground sloth Eremotherium laurillardi (Mammalia, Xenarthra, Megatheriidae). Historical Biology 24(2): 187-206.

––– and RK McAfee. 2014. Chewing through the Miocene: an examination of the feeding musculature in the ground sloth Hapalops from South America. F1000 Research 3:86. http://f1000research.com/articles/3-86/v1

Nordenskjöld, E. 1899. La Grotte du Glossotherium (Neomylodon) en Pagatonie. Comptes Rendus 129: ?

––– 1900. Jackttagelser och fynd I Grottor vid Última Esperanza y sydvestra patagonien. Loglinga svenska vetenskaps- Akademien Handlingar 33(3): 1-24.


-O-

Oliveira, LHA, CP da Costa and SE Huggins. 1980. Cardiac mass, blood temperature and ventricular fibrillation: a study of the comparative physiology of the three-toed sloth and the domestic cat. Comparative Biochemistry and Physiology A 67(3): 483-490.

Oren, DC. 1993. Did ground sloths survive to recent times in the Amazon Region? Goeldiana Zoologica 19: 1-11.

Orr, P. 1938. Unique construction of an exhibit of Pliocene edentates. Technical Series, Field Museum of Natural History 5: 3-6.

Owen, R. 1839. Zoology of the Voyage of the Beagle, under the command of Captain Fitzroy, R.N., during the years 1832-1826. Part 1, Fossil Mammalia. Smith, Elder and Co., London: 111pp.

––– 1842. Description of the Skeleton of and Extinct Gigantic Sloth, Mylodon robustus Owen, with Observations on the Osteology, Natural Affinities, and Probable Habits of the Megatherioid Quadrupeds in General. R. and J. Taylor, London, 176 pp.

––– 1843. Letter from Richard Owen, Esq., F.R.S., F.G.S. &c., &c., on Dr. Harlan’s notice of new fossil Mammalia. American Journal of Science 44(2): 341-345.

––– 1851. On the Megatherium (Megatherium americanum, Cuvier and Blumenbach). Part I. Preliminary Observations on the Exogenous Processes of Vertebrae. Philosophical Transactions of the Royal Society of London 141: 719-764.

––– 1855. On the Megatherium (Megatherium americanum, Cuvier and Blumenbach). Part II. Vertebrae of the Trunk.  Philosophical Transactions of the Royal Society of London 145: 359-389.

––– 1856. On the Megatherium (Megatherium americanum, Cuvier and Blumenbach). Part III. The skull. Philosophical Transactions of the Royal Society of London 146: 571-589.

––– 1857. On the scelidothere (Scelidotherium leptocephalum Owen). Philosophical Transactions of the Royal Society of London 147: 101-110.

––– 1858. On the Megatherium (Megatherium americanum, Cuvier and Blumenbach). Part IV. Bones of the anterior extremities. Philosophical Transactions of the Royal Society of London 148: 261-278.

––– 1860. On the Megatherium (Megatherium americanum, Cuvier and Blumenbach). Part V. Bones of the posterior extremities. Philosophical Transactions of the Royal Society of London 149: 809-829.

––– 1860. Memoir on the Megatherium or giant ground sloth of America (Megatherium americanum Cuvier). London, United Kingdom. pp 84

Oxnard, CE. 1990. From giant ground sloth to human osteoporosis. Proceedings of the Australasian Society of Human Biology 3: 75-96.