The oldest known reptile, Eosauravus copei Williston.
Series: Smithsonian miscellaneous collections,; v. 139, no. 1
Publisher: Smithsonian Institution
Published: 1959
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Eosauravus copei.
Notes: Bibliography: p. 12-13.
At head of title: Charles D. and Mary Vaux Walcott Research Fund.