Biostratigraphy of the Phosphoria, Park City, and Shedhorn formations
By: by Ellis L. Yochelson ; with a section on fish by Dianne H. Van Sickle ; work done partly on behalf of the U.S. Atomic Energy Commission.
Contributors: Van Sickle, Dianne H.; U.S. Atomic Energy Commission.
Series: Geology of Permian rocks in the western phosphate field; Geological Survey professional paper -- 313-D
Publisher: U.S. Govt. Print. Off.
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 660
Subjects: Paleontology -- Permian.; Paleontology -- West (U.S.) -- Permian.; Mollusks, Fossil -- West (U.S.); Brachiopoda, Fossil -- West (U.S.); Bryozoa, Fossil -- West (U.S.); Fishes, Fossil -- West (U.S.); Formations (Geology) -- West (U.S.); Phosphoria Formation.
Notes: "Distribution of megafossils in more than 1,500 collections, mainly from measured sections, and their paleoecological interpretation."

Includes bibliographical references (p. 654-656) and index.