Primeros registros fósiles de pejerreyes (Teleostei: Atheriniformes) en el Pleistoceno Medio de la provincia de Buenos Aires, Argentina

Resumen

First fossil records of silversides (Teleostei: Atheriniformes) from the Middle Pleistocene
of Buenos Aires province, Argentina. This paper presents the fossil remains of silversides recovered in
sedimentary sequences corresponding to Centinela del Mar district Bonaerian Stage-Age (Middle Pleistocene),
Buenos Aires province, Argentina. The few only previously described fossil silversides are restricted to three
Chilean and Argentinean Miocene localities. The silversides studied here present several diagnostic osteological
characters that allow us to refer the remains to the genus Odontesthes. These records give us new data on the
composition of the pleistocenic ictiofaunas of Argentina, besides representing the first fossil records of silversides
from the Pampean region.