Lower Middle Devonian phacopid trilobites from Michigan, southwestern Ontario, and the Ohio Valley.
Series: Contributions from the Museum of Paleontology, University of Michigan,; v. 11, no. 11
Publisher: University of Michigan Press
Published: 1954
Place of publication: Ann Arbor
Language: eng
Number of pages: 221
Subjects: Phacopida
Notes: Bibliography: p. 215-216.
Cover title.