Hemicidáridos (Echinodermata, Echinoidea) del Jurásico Superior de Oaxaca y Chiapas

Abstract

Two species of regular echinoids (Pseudocidaris lusitánica De Loriol and Pseudocidaris thurmanni (Agassiz)) are described from the San Ricardo Formation (Kimeridgian-Neocomiano) from sites located in the northeastern part of the State of Oaxaca and in the west-central part of the State of Chiapas… In order to continue, download the full paper in PDF.