Home
Help
Print...
TaxNo: 4818Subfamily Cravenoceratinae
Suborder: Goniatitina
Superfamily: Neoglyphioceratoidea
Family: Cravenoceratidae
Subfamily: Cravenoceratinae
Qualifier: fs
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