TaxNo: 5858Family Spirolegoceratidae
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoicoceratoidea
|
| Family: | Spirolegoceratidae |
| Qualifier: | fy |
| Author: |
Ruzhencev 1974,p.28
|
| Valid: | Metalegoceratidae (Spirolegoceratinae) TAX |
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|