Home
Help
Print...
TaxNo: 3005Genus Balvia
Suborder: Tornoceratina
Superfamily: Prionoceratoidea
Family: Prionoceratidae
Subfamily: Prionoceratinae
Genus: Balvia
Qualifier: ge
Author: Lange 1929,p.60
Lower Boundary: UD6A2--UD6B:Balvia(M.) lens base [18,20], 363.2 million years
Upper Boundary: UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years