| Suborder: |
Clymeniina
|
| Superfamily: |
Clymenioidea
|
| Family: |
Platyclymeniidae
|
| Genus: | Trigonoclymenia |
| Qualifier: | ge |
| Author: |
Schindewolf 1934,p.343
|
| Lower Boundary: |
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|
| Upper Boundary: |
UD4B--UD4C: serpentina Zone base [16,45], 366.4 million years
|
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