TaxNo: 3146Gastrioceras circumnodosum
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: |
Gastrioceras
|
| Species: | circumnodosum |
| Qualifier: | ss |
| Author: |
Foord 1903,p.196
|
| Lower Boundary: |
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
|
| Upper Boundary: |
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|