Journal
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
Volume 26, Issue 4, Pages 424-434Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsames.2008.05.001
Keywords
Ecuador; Quaternary; Fossil Mammalia; Xenarthra; Eremotherium; Paleobiology
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New remains of Eremothenium were recovered from the Pacific coast of Ecuador's Manabi province. The Machalilla fossiliferous locality records the northernmost presence of Eremotherium along the Pacific coast of South America. Most of the fossil remains belong to the same individual, mainly its posterior half, but other individuals are represented. Among the better-preserved specimens are skull fragments, most of the hind limb bones and a number of trunk and caudal centra. These remains were compared with samples collected during the 20th century along the southern coastal regions of Ecuador and northern Peru. Many characters of the long bones and tarsals testify to a possibly different lineage despite the closeness of other Eremotherium populations. Some metric and morphological aspects suggest a different space-temporal southern Caribbean provenance. Other Eremotherium specimens, coming from other Ecuadorian localities, were studied and compared with classic Eremotherium samples. Interesting morpho-functional aspects are pointed out with regard to the tail and its importance in the bipedal stance. (C) 2008 Elsevier Ltd. All rights reserved.
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