Triasovye ammonoidei severa Sibiri
Subtitle: semeĭstvo Parapopanoceratidae
By: A.S. Dagis, S.P. Ermakova.
Contributors: Ermakova, S. P.
Series: Trudy ;; vyp. 495; Trudy instituta geologii i geofiziki ;; vyp. 495.
Publisher: Izd-vo "Nauka"
Published: 1981
Place of publication: Moskva
Language: rus
Number of pages: 106
Subjects: Ammonoidea.; Paleontology -- Devonian.
Other titles: Triassis ammonoids of North Siberia.; Parapopanoceratidae.
Notes: Bibliography: p. 101-[104]
Title on verso t.p.: Triassis ammonoids of North Siberia.
At head of title: Akademii͡a︡ nauk SSSR. Sibirskoe otdelenie. Institut geologii i geofiziki.