Title: Ammonity i zonalʹnai͡a︡ stratigrafii͡a︡ kellovei͡a︡ subborealʹnykh raĭonov SSSR
First published: 1987
Subjects: Paleontology, Ammonoidea
Places: Northern Soviet Union
Time periods: Jurassic
LC classification: QE1 .A3525 vyp. 691, QE807.A5 .A3525 vyp. 691