TaxNo: 4712Paramexicoceras aldanense+*
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Cyclolobidae
|
| Subfamily: |
Kufengoceratinae
|
| Genus: |
Paramexicoceras
|
| Species: | aldanense+* |
| Qualifier: | ss |
| Author: |
Popov 1970,p.140
|
| Lower Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|
| Upper Boundary: |
lower Capitanian--upper Capitanian, 263 million years
|