TaxNo: 3527Aulacogastrioceras spinosum+
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoicoceratoidea
|
| Family: |
Paragastrioceratidae
|
| Subfamily: |
Paragastrioceratinae
|
| Genus: |
Aulacogastrioceras
|
| Species: | spinosum+ |
| Qualifier: | ss |
| Author: |
Zhao & Zheng 1977,p.241
|
| Lower Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|
| Upper Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|