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 Kelemejtubus castroi Cantalice & Alvarado-Ortega, 2017 Referred specimens. IGM 4864 (holotype), IGM 4865-IGM 4867, IGM 4908, IGM 4909 (paratypes). Locality and age. Belisario Dominguez and Division del Norte quarries, Tenejapa-Lacandon geological unity, Salto de Agua and Palenque, Chiapas; Paleocene (Danian).