TaxNo: 2194Trizonoceras leitrimense
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Dimorphoceratidae
|
| Subfamily: |
Dimorphoceratinae
|
| Genus: |
Trizonoceras
|
| Species: | leitrimense |
| Qualifier: | ss |
| Author: |
Moore 1958,p.220
|
| Lower Boundary: |
DER Go beta falcatus--Go beta gracilis, 329.1 million years
|
| Upper Boundary: |
DER Go beta gracilis Z.--spirale Z. [13., 328.8 million years
|