Toarskie ammonity (Dactylioceratidae)
Series: Akademiia nauk SSSR.  Sibirskoe otdelenie.  Trudy Instituta geologii i geofiziki, vyp. 40
Publisher: Nauka
Published: 1968
Place of publication: Moskva
Language: rus
Number of pages: 107
Subjects: Ammonoidea; Paleontology -- Siberia, Northern