Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Maxigoniatitidae
|
Genus:
|
Bollandoceras
|
Species:
|
submicronotum |
Qualifier:
|
sy |
Author:
|
Bisat 1934,p.291
|
Valid:
|
Bollandoceras micronotum (TAX2100 ) |
Lower Boundary:
|
Up.Visean Goniatites BZ base [up.VIS], 333.5 million years
|
Upper Boundary:
|
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|