Systematics of Lower and Lower Middle Devonian species of the trilobite Phacops Emmrich in North America.
Series: Bulletin of the American Museum of Natural History, v. 151, article 4; Bulletin of the American Museum of Natural History ;; v. 151, article 4.
Publisher: American Museum of Natural History
Published: 1973
Place of publication: New York
Language: eng
Number of pages: 337
Subjects: Phacops.; Paleontology -- Devonian.; Paleontology -- North America.
Notes: Bibliography: p. 336-337.