Title: Variation and ontogeny of Calycoceras (Proeucalycoceras) canitaurinum (Haas, 1949) from the upper Cretaceous (Cenomanian) of the western interior of the United States
First published: 1990
Description: Description and illustrations of an important upper Cenomanian index ammonite from the western interior of the United States.
Subjects: Paleontology, Ammonoidea, Stratigraphic Geology
Places: West (U.S.)
Time periods: Cretaceous
LC classification: QE75 .B9 no. 1881, QE746 .B9 no. 1881