A spiny aptychus from the Cretaceous of Kansas
By: by Alfred G. Fischer and Robert O. Fay
Contributors: Fay, Robert O., author
Series: Kansas. State Geological Survey. Bulletin -- 102, pt. 2; 1953 Reports of studies, pt. 2; Reports of studies (Kansas Geological Survey) -- 1953, pt. 2.; Bulletin (Kansas Geological Survey) -- 102, pt. 2.
Published: 1953
Place of publication: Lawrence
Language: eng
Number of pages: 92
Subjects: Ammonoidea; Paleontology
Notes: Title page lacking.

Bibliography: p. 91-92.