Index fossils of North America /
Shimer, Hervey Woodburn, 1872-
Index fossils of North America / by Hervey Woodburn Shimer and Robert Rakes Shrock. - Cambridge, Mass. : M.I.T. Press, 1972. - ix, 837 p. : ill. ; 28 cm.
A new work based on the complete revision and reillustration of Grabau and Shimer's'North American index fossils'.
Paleontology--North America.
Invertebrates, Fossil.
Index fossils of North America / by Hervey Woodburn Shimer and Robert Rakes Shrock. - Cambridge, Mass. : M.I.T. Press, 1972. - ix, 837 p. : ill. ; 28 cm.
A new work based on the complete revision and reillustration of Grabau and Shimer's'North American index fossils'.
Paleontology--North America.
Invertebrates, Fossil.