Suborder:
|
Anarcestina
|
Superfamily:
|
Triainoceratoidea
|
Family:
|
Pharciceratidae
|
Genus:
|
Pharciceras
|
Species:
|
amplexum |
Qualifier:
|
ss |
Author:
|
Hall 1886,p.127
|
Lower Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|
Upper Boundary:
|
MD3A--MD3B:latesept.--lunulicosta[17,90], 388 million years
|