Echinoids from the middle Eocene Lake City Formation of Georgia.
Contributors: Charles D. and Mary Vaux Walcott Research Fund.; Smithsonian Institution.
Series: Smithsonian miscellaneous collections -- 153/2; Smithsonian publications -- 4738
Publisher: Smithsonian Institution Press
Published: 1968
Place of publication: Washington
Language: eng
Notes: At head of title : Charles D. and Mary Vaux Walcott Research Fund.