Abstract
espanolActualmente se considera que el origen del orden Clypeasteroida se dio durante el Cretacico, con el grupo basal que incluye las familias Faujasiidae, Plasiolampadidae, Conoclypeidae y Oligopygidae. Sin embargo, hay reportes taxonomicos sobre los equinoideos del Cretacico en Mexico que tambien incluyen especies de las familias Echinarachniidae y Mellitidae. En el presente trabajo se revisan y actualizan los registros de clypeasteroideos del Cretacico en Mexico. Con una revision bibliografica exhaustiva se localizaron ejemplares del orden Clypeasteroida albergados en colecciones nacionales e internacionales, de los que se provee informacion taxonomica y paleo-biogeografica. Tres especies, Hardouinia aequorea, Hardouinia potosiensis y Phyllobrissus burckhardti, son ilustradas y catalogadas en dos de los 11 generos de la familia Faujasiidae. Los registros previos de las familias Echinarachniidae y Mellitidae son incorrectos, coincidiendo con la hipotesis actual del origen del orden Clypeasteroida. Se corrigen los numeros de catalogo publicados para la serie tipo de Encope michoacanensis de acuerdo con la base de datos de la Coleccion Nacional de Paleontologia. EnglishIt is currently considered that the origin of the order Clypeasteroida occurred during the Cretaceous, with the stem group that includes the families Faujasiidae, Plasiolampadidae, Conoclypeidae, and Oligopygidae. Nevertheless, there are taxonomic reports of Cretaceous echinoids from Mexico, which also include species of the Echinarachniidae and Mellitidae families. The present paper reviews and updates the records of the Cretaceous clypeasteroids in Mexico. Specimens belonging to the order Clypeasteroida were located in national and international collections, which also provided taxonomic and paleobiogeographic data. Three species, Hardouinia aequorea, Hardouinia potosiensis, and Phyllobrissus burckhardti, are illustrated and cataloged in two of the 11 genera in family Faujasiidae. The previous records of families Echinarachniidae and Mellitidae are incorrect, coinciding with the current hypothesis on the origin of the Clypeasteroida order. Invalid catalog numbers published for the type series of Encope michoacanensis were corrected according to the Coleccion Nacional de Paleontologia database.
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