Home
Help
Print...
TaxNo: 4817Family Cravenoceratidae
Suborder: Goniatitina
Superfamily: Neoglyphioceratoidea
Family: Cravenoceratidae
Qualifier: fa
Author: Ruzhencev 1957,p.58
Lower Boundary: DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
Upper Boundary: Arnsbergian--Chokierian [ARN--CHO], 319 million years