Kleyton Magno Cantalice. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México; Circuito de la Investigación, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. kleytonbio@yahoo.com.br
Kleyton Cantalice recently has obtained his Ph.D. in Biosciences at Universidade do Estado do Rio de Janeiro (UERJ). His field research is focused on taxonomy and systematic of fossil and extant acanthomorphs fishes to understand the origin and evolution of derived forms on salt and freshwater enviroments, principally along America. His studies are based on anatomical comparisons, phylogenetic systematic, biogeography and biochronology. Currently, he is a Postdoctoral student, working on a project about the phylogenetic and biogeographic implications of Paleocene acanthomorph fishes from Chiapas, Mexico.
Jesús Alvarado-Ortega. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México; Circuito de la Investigación, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. alvarado@geologia.unam.mx
Born in 1966 in the city of Zacatecas. In 1998, I got the Bachelors degree (Biology) in the Sciences Faculty at Universidad Nacional Autónoma de México (UNAM). In 2005, I got my Doctoral degree in the Geological Institute (IGM), UNAM. During 2005-2007, I had a Posdoctoral position in the Biological Institute at Universidade do Estado do Rio de Janeiro, Brazil. Always I worked on Mexican fossil fishes under my advisor and friend Dr. Shelton P. Applegate. Since 2007, I´m in charge of the Tlayúa project as full-time Researcher at IGM, UNAM. The main interest of my work is focused on the taxonomical characterization of Mexican fossil vertebrates and the understood of phylogenetic and biogeographic patterns and process outlined by these fossils.