The paleoichthyofauna housed in the Coleccion Nacional de Paleontologia of Universidad Nacional Autonoma de Mexico Author Cantalice, Kleyton Magno Author Martinez-Melo, Alejandra Author Romero-Mayen, Violeta Amparo text Zoosystematics and Evolution 2019 95 2 429 452 http://dx.doi.org/10.3897/zse.95.35435 journal article http://dx.doi.org/10.3897/zse.95.35435 1860-0743-2-429 514DEB4FBD404ED1898B27A5F9013FB5 Nebrius indet. Referred specimen. IGM 6981 ( Ferrusquia-Villafranca et al. 1999 ). Locality and age. Rancho el Jobo, San Juan Formation, Tuxtla Gutierrez , Chiapas; Middle Eocene.