Suborder:
|
Goniatitina
|
Superfamily:
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Pericycloidea
|
Family:
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Muensteroceratidae
|
Genus:
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Cluthoceras
|
Species:
|
neilsoni |
Qualifier:
|
ss |
Author:
|
Currie 1954,p.563
|
Lower Boundary:
|
GBY E1c--E2a1 (Crav.malham.--cowling.), 324 million years
|
Upper Boundary:
|
GBY E2c4--H1a(Nu.nuculum--I.subglobosum), 319 million years
|