Cobban, William A.

Upper Cretaceous (Maastrichtian) Ammonites from the Nostoceras alternatum zone in southwestern Arkansas - Washington, D.C. U.S. Geological Survey 1991 - pp. E1-E6

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


AMMONOIDEA
CRETACEO


ESTADOS UNIDOS