Living and fossil genera of the Clypeasteroida (Echinoidea, Echinodermata)
Subtitle: an illustrated key and annotated checklist
By: Rich Mooi.
Series: Smithsonian contributions to zoology ;; no. 488
Publisher: Smithsonian Institution Press
Published: 1989
Place of publication: Washington, D.C
Language: eng
Number of pages: 51
Subjects: Sand dollars -- Identification.
Notes: Bibliography: p. 50-51.