A study of the oldest known vertebrates, Astraspis and Eriptychius
By: [by] William L. Bryant ...
Contributors: Gregory, William K. (William King), 1876-1970; MacCurdy, George Grant, 1863-1947
Publisher: American Philosophical Society
Published: 1936
Place of publication: Philadelphia]
Language: eng
Number of pages: 427
Subjects: Fossil Vertebrates
Notes: Caption-title.

From Proceedings of the American Philosophical Society, v. LXXVI, no. 4, 1936.