A New Megalonychid Sloth From the Late Wisconsinan of the Dominican Republic

Authors

Elizabeth Rega, Western University of Health SciencesFollow
Donald A. McFarlane, Claremont McKenna College; Pitzer College; Scripps CollegeFollow
Joyce Lundberg, Carleton UniversityFollow
Keith Christenson

Document Type

Article

Department

WM Keck Science

Publication Date

2002

Abstract

An unusually well preserved skull, mandible, and indisputably associated post-cranial elements of new sloth, Acratocnus (Miocnus), were recovered from a cave in Jaragua National Park, Dominican Republic. The animal died lying in a rimstone pool and was rapidly coated with a thin calcite patina. We have documented a late Wisconsinan age for this specimen by inorganic 14C radiometric dating of the patina, with supporting data on the carbon systematics of the speleothems in this cave. This sloth is described as a new species on the basis of the distinctive morphology and relative size of cranial and mandibular features. We consider the close relationship between Acratocnus of the Dominican Republic and Puerto Rico to constitute clear evidence for late Tertiary inter-island dispersal of this lineage, congruent with similar evidence from other West Indian terrestrial mammal orders.

Comments

Previously linked to as: http://ccdl.libraries.claremont.edu/u?/irw,480.

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Recommended Citation

Rega, E., D.A. McFarlane, J. Lundberg, and K. Christenson. "A new Megalonychid sloth from the Late Wisconsinan of the Dominican Republic." Caribbean Journal of Science 38 (2002): 11-19.