INVESTIGADORES
ZURITA Alfredo Eduardo
congresos y reuniones científicas
Título:
First evidence of scavenging in a Glyptodont (Mammalia, Glyptodontidae) from the Pliocene of the Pampean region (Argentina)
Autor/es:
DE LOS REYES, M.; ZURITA, A. E; SOIBELZON, E.; POIRÉ, D; ARROUY, M; CANALICCHIO, J.M.
Lugar:
Buenos Aires
Reunión:
Jornada; . XXVI Jornadas Argentinas de Paleontología de Vertebrados; 2012
Institución organizadora:
APA
Resumen:
The
Cingulata Glyptodontidae (Xenarthra) are one of the most conspicuous Cenozoic
herbivores clades in South America, reaching North American during the Great
American Biotic Interchange. Until now, the evidence of predation on these
large armored mammals was elusive. It was limited to a Pliocene skull (Glyptotherium Osborn) found in North
America and some latest Pleistocene-early Holocene specimens (e.g. Doedicurus Burmeister) in South America,
with signals of human consumption. In this contribution we present the first
case of scavenging over a Glyptodontidae that we identify as cf. Eosclerocalyptus lineatus Ameghino
(Hoplophorini), coming from the Pliocene ?Calera Facies? of the El Polvorín
Formation, Olavarría, Buenos Aires province (Argentina). The evidence is represented by some bite marks that were observed over the neural
apophysis of the middle section of the vertebral column. In addition, we
analyze the potential scavengers and the paleoenvironmental context in which
this occurred. The evidence suggests that: a) the environmental context in
which the carcass was buried was represented by a shallow water body, probably
an abandoned channel; b) the carcass was completely covered briefly; c) the
morphology of the bite marks clearly coincides with the dentition of the
procyonid Chapalmalania Ameghino,
thus corroborating some presumptions about the ecological trends of this taxon