The dental size of the mastodon from Hidalgo is comparable to that of mastodons from the Gulf Coastal Plain and the Great Lakes region, whereas the limb dimensions are similar to those of the Watkins Glen Mastodon from the late Pleistocene of New York. americanum: well-developed tusks that curved upward upper and lower molars with a simple occlusal pattern last molars with four to five lophs/ids a medial sulcus between the lophs/ids a scapula with a straight caudal border, a short and expanded neck, and a glenoid cavity that is oval in outline a short and robust humerus with a prominent epicondylar crest a radius with a wide distal end and an ulna with a well-developed olecranon process and a deep trochlear notch. The material from Hidalgo shows the following diagnostic features of M. The sample includes cranial and postcranial remains of an adult male that represents one of the most complete mastodons that have been found in Mexico, as well as a molar belonging to an old individual. * received: May 13, 2014.Ĭorrected manuscript received: June 24, 2014.įossil specimens of American mastodons ( Mammut americanum) that have been recovered from fluvial sedimentary deposits of the late Pleistocene of southeastern Hidalgo, central Mexico, are formally described. Cabral-Perdomo 1ġ Museo de Paleontología, Área Académica de Biología, Universidad Autónoma del Estado de Hidalgo, Ciudad del Conocimiento, Carretera Pachuca-Tulancingo km 4.5, CP 42184, Pachuca, Hidalgo, México. Description of mastodons ( Mammut americanum) from the late Pleistocene of southeastern Hidalgo, central Mexicoĭescripción de mastodontes ( Mammut americanum) del Pleistoceno tardío del sureste de Hidalgo, México central
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