Title: Ammonity i zonalʹnai︠a︡ stratigrafii︠a︡ nizhnego oksforda severa Sibiri =
First published: 1975
Subjects: Paleontology, Ammonoidea
Places: Siberia
Time periods: Jurassic
LC classification: QE1. A3525 vyp. 275, QE807.A5, QE807A5 K55