Suborder:
|
Goniatitina
|
Superfamily:
|
Adrianitoidea
|
Family:
|
Adrianitidae
|
Subfamily:
|
Adrianitinae
|
Genus:
|
Basleoceras |
Qualifier:
|
gy |
Author:
|
Ruzhencev 1950,p.203
|
Valid:
|
Epadrianites Schindewolf,1931,p.200 |
Lower Boundary:
|
RIT Bitauni beds base, 275.6 million years
|
Upper Boundary:
|
RIT Amarassi beds top, 258 million years
|