Estudios Geológicos, Vol 72, No 2 (2016)

Suidos fósiles (Artiodactyla, Mammalia) de Aves Cave I y yacimientos cercanos en el systema paleokárstico de Bolt’s Farm, Sudáfrica


https://doi.org/10.3989/egeol.42389.404

M. Pickford
CR2P/UMR 7207 – Sorbonne Universités – MNHN, CNRS, UPMC, Université Paris VI, Francia

D. Gommery
CR2P/UMR 7207 – Sorbonne Universités – MNHN, CNRS, UPMC, Université Paris VI; Department of Anthropology and Archaeology, University of South Africa; HRU, Plio-Pleistocene Palaeontology Section, Ditsong National Museum of Natural History, Francia

Resumen


Las excavaciones llevadas a cabo desde 2011 en el sistema paleokárstico de Bolt’s Farm (Sudáfrica), han dado lugar a la recuperación de interesantes restos de suidos, sobre todo en Aves Cave I. Los taxones presentes son Potamochoeroides hypsodon y Notochoerus capensis, los mismos que aparecen en Makapansgat. El nuevo material de Notochoerus, que incluye un tercer molar superior y un cuarto premolar inferior, refuerza la conclusión de que este género es un suinae y no un tetraconodonto como se ha aceptado durante el último medio siglo. Potamochoeroides tiene rmas mandibulares engrosadas lo que indica que descendió del género Dasychoerus que se extendió por África desde Eurasia hace unos 5 millones de años. Otros depósitos kársticos de Bolt’s Farm han proporcionado una fauna de suidos más jóvenes, incluyendo Metridiochoerus andrewsi y Phacochoerus modestus, lo que sugiere que el sistema kárstico de Bolt’s Farm estuvo activo durante un período de tiempo considerable (aproximadamente 4,5 Ma - 1,8 Ma). El hecho de que todos los taxones de suidos de Bolt’s Farm sean hipsodontos indica que el paleoambiente contenía abundante hierba.

Palabras clave


Sistema Palaeokárstico de Bolt's Farm; Sudáfrica; Plio-Pleistoceno; suidos; biocronología; Paleoambiente

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