TaxNo: 2193Trizonoceras kathleenae
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Dimorphoceratidae
|
| Subfamily: |
Dimorphoceratinae
|
| Genus: |
Trizonoceras
|
| Species: | kathleenae |
| Qualifier: | ss |
| Author: |
Moore 1936,p.190
|
| Lower Boundary: |
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|
| Upper Boundary: |
DER chalic.--up.Go gamma2,Emstit.novalis, 327.2 million years
|