Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
|
Homoceratidae
|
Subfamily:
|
Homoceratinae
|
Genus:
|
Homoceras
|
Species:
|
undulatum |
Qualifier:
|
ss |
Author:
|
Brown 1841,p.213
|
Lower Boundary:
|
Arnsbergian--Chokierian [ARN--CHO], 319 million years
|
Upper Boundary:
|
Alportian--Kinderscoutian [ALP--KIN], 317 million years
|