TaxNo: 1266Extropharciceras arenicum
| Suborder: |
Anarcestina
|
| Superfamily: |
Triainoceratoidea
|
| Family: |
Pharciceratidae
|
| Genus: |
Extropharciceras
|
| Species: | arenicum |
| Qualifier: | ss |
| Author: |
Petter 1959,p.138
|
| Lower Boundary: |
FRM P.lunulicosta--Pharciceras arenicum, 386.6 million years
|
| Upper Boundary: |
FRM Pharc.arenicum--Pseudoprobel.pernai, 386.2 million years
|