Scelidotherium leptocephalum Owen, 1840 (1839?)



Taxonomy & Nomenclature



Conservation Status


Last record: Late Pleistocene





Biology & Ecology










Original scientific description:

Owen, R. (1840) Zoology of the Voyage of the Beagle, Fossil Mammalia.


Other references:

Bargo, MS, SF Vizcaíno, FM Archuby, and RE Blanco. (2000). Limb bone proportions, strength and digging in some Lujanian (Late Pleistocene-Early Holocene) Mylodontid ground sloths (Mammalia, Xenarthra). Journal of Vertebrate Paleontology 20(3): 601-610.

Brambilla, Luciano and Ibarra, Damián A. (2018). The occipital region of late Pleistocene Mylodontidae of Argentina. Boletín del Instituto de Fisiografía y Geología 88: @-@.

R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698.

Cruz L.E., Bargo M.S., Tonni E.P., Figini A.J. 2010 Radiocarbon date on megafauna from the late Pleistocene-early Holocene of Córdoba province, Argentina: stratigraphic and paleoclimatic significance. Revista Mexicana de Ciencias Geológicas 27(3), 470-476.

Dantas, Mário A. T., Campbell, Sean Cody and McDonald, H. Gregory. (2023). Paleoecological inferences about the Late Quaternary giant ground sloths from the Americas. Research Square preprint.

C. M. Deschamps. 2005. Late Cenozoic mammal bio-chronostratigraphy in southwestern Buenos Aires Province, Argentina. Ameghiniana 42(4):733-750.

Fariña, Richard A., Vizcaíno, Sergio F. and Bargo, María S. (1998). Body mass estimations in Lujanian (late Pleistocene-Holocene of South America) mammal megafauna. Mastozoología Neotropical 5(2): 87-108.

Fernicola, J. C., Vizcaino, F, and de Iuliis, G. (2009). The Fossil Mammals collected by Charles Darwin in South America during his travels on board the HMS Beagle. Revista de la Asociatión Geológica Argentina 64(1): 147-159.

R. Lydekker. 1894. Contributions to a knowledge of the Fossil Vertebrates of Argentina. Part II. 2. The extinct edentates of Argentina. Anales del Museo de La Plata. Paleontología Argentina 3:1-118.

McDonald, H. Gregory. (2023). A Tale of Two Continents (and a Few Islands): Ecology and Distribution of Late Pleistocene Sloths. Land 12(6): 1192.

Nieto, Gastón L. et al. (2020). The Skeleton of the Manus of Scelidotherium (Xenarthra, Mylodontidae) Specimens from the Pleistocene of the Province of Córdoba, Argentina, and its Systematic Implications. Journal of Mammalian Evolution. doi: [Abstract]

Patiño, Santiago et al. (2021). Finite element and morphological analysis in extant mammals’ claws and quaternary sloths’ ungual phalanges. Historical Biology 33(6): 857-867. [Abstract]

Smith F.A., Lyons S.K., Ernest S.K.M., Jones K.E., Kaufman D.M., Dayan T., Marquet P.A., Brown J.H., Haskell J.P. 2003 Body mass of late Quaternary mammals. Ecology 84(12), 3403-3403.

Varela, Luciano and Tambusso, P. Sebastián. (2023). 3D models related to the publication: 3D Finite Element Analysis and Geometric Morphometrics of Sloths (Xenarthra, Folivora) Mandibles Show Insights on the Dietary Specializations of Fossil Taxa. Journal of South American Earth Sciences.

A. E. Zurita, A. A. Carlini, G. J. Scillato-Yané and E. P. Tonni. 2004. Mamíferos extintos del Cuaternario de la Provincia del Chaco (Argentina) y su relación con aquéllos del este de la región pampeana y de Chile. Revista geológica de Chile 31(1):65-87.


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