Acanthoceratid Ammonoidea from near Greybull, Wyoming
By: Otto Haas
Series: Bulletin of the American Museum of Natural History -- v. 93, article 1
Publisher: American Museum of Natural History
Published: 1949
Place of publication: New York
Language: eng
Number of pages: 39
Subjects: Acanthoceratidae; Paleontology
Notes: "Issued February 23, 1949"--T.p. verso.

Includes bibliographical references (p. 38-39).