1984 Cheiloceras (Compactoceras) Becker, p.84 [nom.nud.].
2002 Cheiloceras [Compactoceras) Becker: 178.
Type species: Goniatites verneuili Münster, 1839, p17 [OD].
A: Early whorls involute and subglobular, later conch form compressed.
B: Growth lines convex, prominent on venter, do not reach the umbilicus.
G: Simple dorsal lobe.
| Suborder: |
Tornoceratina
|
| Superfamily: |
Dimeroceratoidea
|
| Family: |
Cheiloceratidae
|
| Genus: |
Cheiloceras
|
| Subgenus: | Compactoceras |
| Qualifier: | gs |
| Author: |
Becker 2002,p.178
|
| Lower Boundary: |
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
| Upper Boundary: |
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|