Validation of Prebranchioplax cretacica Vega & Ahyong, a fossil mathildellid crab from the Upper Cretaceous of northeast Mexico (Crustacea: Decapoda: Goneplacoidea) Author Vega, Francisco 0000-0001-5445-8832 Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, CDMX, Mexico. vegver @ unam. mx; https: // orcid. org / 0000 - 0001 - 5445 - 8832 vegver@unam.mx Author Ahyong, Shane T. Australian Museum, 1 William St., Sydney, NSW 2010, Australia. & School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia text Zootaxa 2021 2021-07-21 5004 3 498 500 journal article 5309 10.11646/zootaxa.5004.3.8 de98cc26-7d60-4967-a7de-2bb5197ee4bc 1175-5326 5120859 A92842F0-5773-4733-A868-5760BA31AB4A Prebranchioplax gen. nov. Prebranchioplax Vega & Ahyong in Vega et al . 2018: 65 [unavailable]. Type species . Prebranchioplax cretacica sp. nov. Gender: feminine. Diagnosis . As for the type species. Etymology . On being a possible precursor to the genus Branchioplax Rathbun, 1916 .