Growth stages in the Middle Devonian rugose coral species Hexagonaria anna (Whitfield) from the Traverse Group of Michigan.

Bibliographic Details

Main Author:	Stumm, Erwin Charles, 1908-1969
Format:	Book
Language:	English
Published:	Ann Arbor : Museum of Paleontology, University of Michigan, 1967.
Series:	Contributions from the Museum of Paleontology ; v. 21, no. 5.
Subjects:	Hexagonaria anna.