TaxNo: 5258Subfamily Spirolegoceratinae
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoicoceratoidea
|
| Family: |
Metalegoceratidae
|
| Subfamily: | Spirolegoceratinae |
| Qualifier: | fs |
| Author: |
Nassichuk 1970,p.86
|
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|