New genus and species of Anablepidae (Teleostei, Cyprinodontiformes) from the Late Miocene of Argentina

BOGAN, SERGIO; CONTRERAS, VÍCTOR H.; AGNOLIN, FEDERICO; TOMASSINI, RODRIGO L.; PERALTA, SILVIO

JOURNAL OF SOUTH AMERICAN EARTH SCIENCES

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2018 vol. 88 p. 374 - 384

0895-9811

A new anablepid (Cyprinodontiformes) from the Late Miocene of Puchuzum locality, San Juan Province,Argentina is described here. The collected specimens include male and female individuals showing markedsexual dimorphism and represented different ontogenetic stages. The fossils show a unique combination ofcharacters reveals a new genus and species, Sanjuanableps calingasta. The phylogenetic analysis allowed toidentify a monophyletic clade including Anableps, Tucmanableps and Sanjuanableps, which constitutes the sistergroup of other anablepids. During the Late Miocene, Sanjuanableps possibly formed monospecific shoals inshallow ponds of salty water in semiarid environments