Revision of the Amphibia and Pisces of the Permian of North-America /
Case, E. C.(Ermine Cowles),1871-
Sellards, Elias Howard,1875-
Hussakof, Louis,1881-
Washington, D.C. : Carnegie Institution of Washington,
1911.
Includes bibliographical refrences (p. 176-178) and index.
Paleontology
Paleontology
Amphibians, Fossil
Fishes, Fossil
Insects, Fossil