RT Journal Article
T1 Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
T1 Taphonomic analysis of the Upper Miocene macromammals of Caleufú (La Pampa, Argentina)
A1 Montalvo, C. I.
A1 Cerdeño, Esperanza
A1 Alcalá, Luis
AB The taphonomic results on the fossil macromammal assemblage from Caleufú (La Pampa Province, Argentina)are presented. The fossiliferous level corresponds to the Cerro Azul Formation, Late Miocene in age.Among the different outcrops of this formation, Caleufú presents the greatest concentration of fossils, with adensity of 4,1 remains/m2. Most fossils were recovered on surface over an area of 1590 m2. Identifyed remains(3200) include reptiles, undetermined birds, and many mammals. Macromammals are represented by aminimal number of individuals of 26 and at least 17 taxa, showing a high diversity, detaching that 11 of thesetaxa are Xenarthra. Most mammal remains are very fragmented and broken, and just 13 basipodial elementsare complete. Only two hemimandibles, a maxillary fragment and a few isolated teeth are well preserved.Indeterminable studied fragments (638) are relatively small sized, and cubic morphologies predominate.Most specimens show a high degree of weathering.The observed taphonomic attributes can be explained by a long exposition to environmental factors beforethe burial process. However, some bones show lichen corrosion, which would indicate moments of reexposition.Abrasion is scarcely present and only on some mineralized bones with sediment infilling. Thetaphonomic analysis concludes that specimens resulted from accumulation of skeletal elements fromdifferent animals that died in the area during a long period of time, corresponding to the time of developingsoil. Diversity would be the result of condensation of remains coming from succesive autochtonouscomunities
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8688
UL http://hdl.handle.net/10272/8688
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026