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 Gyrodus indet. Referred specimens. IGM 9318, IGM 9319 ( Alvarado-Ortega et al. 2014 ). Locality and age. Llano Yosobe , Sabinal Formation, Tlaxiaco, Oaxaca; Jurassic (Kimmeridgian-Tithonian).