title: An occurence records database of Irregular Echinoids (Echinodermata: Echinoidea) in Mexico.
abstract: BACKGROUND
  Research on echinoderms in Mexico began in the late nineteenth century. We present a dataset that includes the taxonomic and geographic information of irregular echinoids from Mexico, housed in four collections: 1) Colección Nacional de Equinodermos "Ma. Elena Caso Muñoz" from the Instituto de Ciencias del Mar y Limnología (ICML), Universidad Nacional Autónoma de México (UNAM); 2) Invertebrate Zoology Collection, Smithsonian Museum of Natural History, Washington, D.C., United States of America (USA); 3) Invertebrate Collection, Museum of Comparative Zoology, University of Harvard, Boston, Massachusetts, USA and 4) Invertebrate Zoology, Peabody Museum, Yale University, New Haven, Connecticut, USA.
  
  
  CONCLUSIONS
  A total of six orders, 17 families, 35 genera and 68 species are reported, 37 distributed in the Pacific coast and 31 in the Atlantic coast, none of them was found in both coasts. The most diverse region is the Gulf of California (S=32); the most diverse order is Spatangoida with 31 species reported in mexican waters.
authors.affiliation: Insituto de Geología, Universidad Nacional Autónoma de México, Mexico, Mexico.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Martínez-Melo
authors.affiliation: Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico, Mexico.
authors.forename: Francisco Alonso
authors.initials: FA
authors.lastname: Solís-Marín
authors.affiliation: Insituto de Geología, Universidad Nacional Autónoma de México, Mexico, Mexico.
authors.forename: Blanca Estela
authors.initials: BE
authors.lastname: Buitrón-Sánchez
authors.affiliation: Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico, Mexico.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Laguarda-Figueras
keywords: Bank of Campeche; Cassiduloida; Clypeasteroida; Colección Nacional de Equinodermos "Ma. Elena Caso Muñoz".; Echinolampadoida; Echinoneoida; Gulf of California; Holasteroida; Panamic Region; Spatangoida