The Ibexian Series (Lower Ordovician), a replacement for "Canadian Series" in North American chronostratigraphy
By: by Reuben J. Ross Jr. ... [et al.] ; with a section on Echinoderm biostratigraphy by James Sprinkle and Thomas E. Guensburg.
Contributors: Ross, Reuben James, 1918-; Sprinkle, James, 1943-; Guensburg, Thomas Edgar.; Geological Survey (U.S.)
Series: Open-file report -- 93-598.; U.S. Geological Survey open-file report -- 93-598.
Publisher: U.S. Geological Survey
Published: 1993
Place of publication: [Denver, CO]
Language: eng
Format: Microform
Number of pages: 75
Subjects: Stratigraphic correlation -- North America; Geology, Stratigraphic -- Ordovician
Notes: Cover title.

Imprint from transmittal sheet.

Three ill. on 3 folded leaves laid in.

"Ch. B. Paleozoic biochronology of the Great Basin, western United States, Michael E. Taylor, editor"--Cover.

Includes bibliographical references (p. 64-75).

Microfiche. [Washington, D.C.] : U.S. G.P.O., [1993]. 2 microfiches.