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Cobban, William A.

Pachydesmoceras Spath, 1922, a Cretaceous ammonite in Colorado - Washington, D.C. U.S. Geological Survey 1991 - pp. A1-A3

Titulo del Bulletin n°1985: Shorter contributions to Paleontology and Stratigraphy

Subjects--Topical Terms:
AMMONOIDEA
CRETACEO

Subjects--Geographic Terms:
ESTADOS UNIDOS