TaxNo: 3973Propinacoceras busterense
| Suborder: |
Prolecanitina
|
| Superfamily: |
Medlicottioidea
|
| Family: |
Medlicottiidae
|
| Subfamily: |
Propinacoceratinae
|
| Genus: |
Propinacoceras
|
| Species: | busterense |
| Qualifier: | ss |
| Author: |
Tumanskaia 19
|
| Lower Boundary: |
TAP Kochusu Fm. base, 270.6 million years
|
| Upper Boundary: |
Kochusu Fm.,lower,basal lst.--lower part, 270.3 million years
|