TaxNo: 3269Preshumardites grafordensis
| Suborder: |
Goniatitina
|
| Superfamily: |
Shumarditoidea
|
| Family: |
Shumarditidae
|
| Genus: |
Preshumardites
|
| Species: | grafordensis |
| Qualifier: | ss |
| Author: |
Miller & Furnish 1940,p.77
|
| Lower Boundary: |
RUS Miachkovian--Zhigulian [MYA--ZHI], 306.5 million years
|
| Upper Boundary: |
Gzhelian--Asselian [C--P], 299 million years
|