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Lainson, R and JJ Shaw. 1982. Coccidia of Brazilian edentates: Eimeria cyclopei n. sp. from the sikly anteater, Cyclopes didactylus (Linn.) and Eimeria choloepi n. sp. from the two-toed sloth, Choloepus didactylus (Linn.). Systematic Parasitology 4(3): 269-278.

Lane, HH. 1909. A suggested classification of edentates. The State University of Oklahoma Research Bulletin 2: 21-27.

Lara-Ruiz, P and AG Chiarello. 2005. Life-history traits and sexual dimorphism of the Atlantic forest maned sloth Bradypus torquatus (Xenarthra: Bradypodidae). Journal of the Zoologial Society of London 267: 63-73.

Laudermilk, JD, and PA Munz. 1934. Plants in the dung of Nothrotherium from Gypsum Cave, Nevada. Carnegie Institution of Washington 483: 29-38.

––– and ––– 1938. Plants in the dung of Nothrotherium from Rampart and Muav Caves, Arizona. Carnegie Institution of Washington 487: 271-281.

LeConte, J. 1882. On certain remarkable tracks found in the rocks of Carson quarry. Proceedings of the California Academy of Science, ????.

Lehmann-Nitshe, R. 1899. El Mamifero misterioso de la Patagonia, "Grypotherium domesticum." III. Coexistecia del hombre con un gran desdentado y un equino en las cavernas patagonicas.
Revista del Museo de La Plata 9: 455-472.

Leidy, J. 1846. Remarks upon the anatomy of the abdominal viscera of the sloth, Bradypus tridactylus Linn. Proceedings of the Academy of Natural Sciences of Philadelphia 3(3): 72-74.

––– 1855. A memoir of the extinct sloth tribe of North America. Smithsonian Contributions to Knowledge: 68.

––– 1868. Notice on some vertebrate remains from the West Indian Islands. Proceedings of the Academy of Natural Sciences of Philadelphia 20(1870): 178-180.

––– 1870. Remarks on Mylodon remains from Central America and on Dromatherium sylvestre. Proceedings of the Academy of Natural Sciences of Philadelphia 22(1870): 8-9.

––– 1885. Remarks on Mylodon. Proceedings of the Academy of Natural Sciences of Philadelphia 37(1885): 49-51.

–––????. Notice of some mammalian remains from the salt mine of Petite Anse, Louisiana. Transactions of the Wagner Free Institute of Science ?: 33-40.

Leite, MB. 1990. Stratigraphy and mammalian paleontology of the Ash Hollow Formation (Upper Miocene) on the north shore of Lake McConaughy, Keith County, Nebraska. Contributions in Geology, University of Wyoming 28(1): 1-29.

Le Pont, F and P Desjeux. 1992. Presence de Choloepus hoffmanni dans les Yungas de la Paz (Bolivie). Mammalia 56(3): 484.

Lillegraven, JA. 1966. Bison crassicornis and the ground sloth Megalonyx jeffersoni in the Kansas Pleistocene. Transactions of the Kansas Academy of Science 69(3-4): 294-300.

Lindahl, J. 1893. Description of a skull of Megalonyx leidyi, n. sp. Transactions of the American Philosophical Society 17(1): 1-10, Plates 1-5.

Linné, C. 1758. Systema naturae perregna tria naturae, secundum classes, ordines, genera, species cum characteribus, differentiis, syonymis, locis. Laurentii Salvi, 824pp.

Linze, D. W. 1948. The giant sloth (Rancho La Brea, California). Earth Science Digest 2(6): 6.

Logan, LE and CC Black. 1979. The Quaternary vertebrate fauna of upper Sloth Cave, Guadalupe Mountains National Park, Texas. National Parks Service Transactions and Proceedings 1979: 141-158.

Long, A, RM Hansen and PS Martin. 1974. Extinction of the Shasta ground sloth. Bulletin of the Geological Society of America 85: 1943-1948.

––– and PS Martin. 1974. Death of American ground sloths. Science 186: 638-640.

–––, ––– and H Lagiglia. 1998. Ground sloth extinction and human occupation at Gruta del Indio, Argentina. Radiocarbon 40(2): 693-700.

Lönnberg, E. 1896. On some remains of "Neomylodon listai" Ameghino, brought home by Swedish Expedition of Tierra del Fuego. Wissenschaftliche Ergebnisse der Schwedischen Esp. nach den Magellansländern 1895-1897, 2: 149-170.

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López Piñero, JM. 1988. Juan Bautista Bru (1740-1799) and the description of the genus Megatherium. Journal of the History of Biology 21: 147-163.

Lucae, JCG. 1884. Statik und Mechanic der Quadrupeden an dem Skelett und den Muskeln des Lemur und Choloepus. Abhandlungen der Senckenbergischen naturforschenden Gesellschaft, Frankfurt 13: 1-92.

Lucas, SG, T Williamson and J Sobus. 1988. Late Pleistocene (Rancholabrean) mammals from the Edith Formation, Albuquerque, New Mexico. New Mexico Journal of Science 28(1): 51-58.

Luederwaldt, H. 1918. Observações sobre a prequiça (Bradypus tridactylus, L.) em liberdade e no captiveiro. Revista Museo Paulista 10: 795-812.

Lull, RS. 1915. A Pleistocene ground sloth, Mylodon harlani, from Rock Creek, Texas. American Journal of Science 39: 327-384.

––– 1929. A remarkable groundd sloth. Memoirs of the Peabody Museum of Yale University 3: 1-39.

––– 1930a. The ground sloth, Nothrotherium. American Journal of Science 20: 344-352.

––– 1930b. Note on coprolite of Neomylodon. American Journal of Science 20: 356.

––– 1938. [Review of] A history of land mammals in the western hemisphere by William Berryman Scott, 1937. American Journal of Science 35(207): 234-235.

Lund, PW. 1838. Blik paa Brasiliens Dyreverden för sidste Jordom-væltning. Kjöbenhavn 4: 13-25.

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––– 1845. Meddelelse af det Udbytte, de i 1844 undersögte Knoglehuler have avgivet til Kundskaben om Brasiliens Dyreverden för sidste Jordomvaeltning. Ebenda 12: 1-94.

Lundelius, EL Jr. 1967. Late Pleistocene and Holocene faunal history of central Texas. In PS Martin and HE Wright Jr, eds.) Pleistocene extinctions: a search for a cause. Yale University Press, New Haven. Pp. 287-319.

Lundy, WE. 1952. The upside-down animal. Natural History 61: 114-119.

––– 1953. Living upside down: The sloths, marvels of survival through stupidity and slowness. In EM Weyer Jr (Ed.), Strangest Creatures on Earth. Sheridan House, New York. Pp. 21-29.

Lydekker, R. 1886. Description of three species of Scelidotherium. Proceedings of the Zoological Society of London: 491-498.

––– 1894a. Contribution to a knowledge of the fossil Vertebrates of Argentina. 2. The extinct Edentates of Argentina. Anales del Museo de La Plata (Paleontologia) 3: 1-118.

––– 1894b. Catalogue of the fossil Mammalia in the British Museum (Natural History). Volume V.

Lyon, G. 1938. Megalonyx milleri a new Pleistocene ground sloth from southern California. Transactions of the San Diego Society of Natural History 9: 15-3.