Suborder:
|
Anarcestina
|
Superfamily:
|
Beloceratoidea
|
Family:
|
Gephuroceratidae
|
Subfamily:
|
Gephuroceratinae
|
Genus:
|
Trimanticoceras |
Qualifier:
|
ge |
Author:
|
House 1977,p.87
|
Lower Boundary:
|
UD1H--UD1I:tenuistr.--P.tripart. [03,50], 378.1 million years
|
Upper Boundary:
|
UD1K--UD1L:varicos.--C.holzapfeli [05,35, 375.1 million years
|