Suborder:
|
unrecognized
|
Superfamily:
|
unrecognized
|
Family:
|
unrecognized
|
Genus:
|
unrecognized
|
Species:
|
planorbiforme |
Qualifier:
|
sn |
Author:
|
Shumard 1855,p.208
|
Lower Boundary:
|
Moscovian--Kasimovian [MOS--KAS], 306.5 million years
|
Upper Boundary:
|
Gzhelian--Asselian [C--P], 299 million years
|