TaxNo: 1832Tornoceras contractum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Tornoceratoidea
|
| Family: |
Tornoceratidae
|
| Subfamily: |
Tornoceratinae
|
| Genus: |
Tornoceras
|
| Species: | contractum |
| Qualifier: | ss |
| Author: |
Glenister 1958,p.90
|
| Lower Boundary: |
UD1B--UD1C:stylioph.--T.kayserl. [01,70], 383.3 million years
|
| Upper Boundary: |
UD1F--UD1G:alveolat.--M.kayseri [02,75], 379.9 million years
|