| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Glaphyritidae
|
| Subfamily: |
Glaphyritinae
|
| Genus: |
Glaphyrites
|
| Species: | pericycloides |
| Qualifier: | ss |
| Author: |
Kullmann 1962,p.309
|
| Lower Boundary: |
ESC Grey Marl Alba Fm. base, 324 million years
|
| Upper Boundary: |
ESC Grey Marl Alba Fm. top, 321 million years
|
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