TaxNo: 2590Tumulites angustus
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Tumulites
|
| Species: | angustus |
| Qualifier: | ss |
| Author: |
Moore 1946,p.424
|
| Lower Boundary: |
DER lowest E1--E1 alpha, 326 million years
|
| Upper Boundary: |
GBY E1b -- E1c; DER E1 alpha -- E1 beta, 325 million years
|