TaxNo: 4664Arcanoceras formosum
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Eogonioloboceratidae
|
| Genus: |
Arcanoceras
|
| Species: | formosum |
| Qualifier: | ss |
| Author: |
Andrianov 1985,p.19
|
| Lower Boundary: |
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|
| Upper Boundary: |
RUS Nm1a2--Nm1b1,Uralopron.-Cravenoc. GZ, 326.4 million years
|