Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Maxigoniatitidae
|
Genus:
|
Bollandoceras
|
Species:
|
minusculum |
Qualifier:
|
ss |
Author:
|
Kuzina 1980,p.55
|
Lower Boundary:
|
RUN Kos'vinskii gorizont base, 349 million years
|
Upper Boundary:
|
RUN Kos'vinskii--Nortnichskii, 340 million years
|