Title: The upper Cretaceous (Cenomanian) ammonites Metengonoceras Dumbli (Cragin) and M. Acutum Hyatt
First published: 1987
Subjects: Paleontology, Metengonoceras, Ammonoidea
Places: West (U.S.)
Time periods: Cretaceous
LC classification: QE75 .B9 no. 1690, QE746 .B9 no. 1690