Suborder:
|
Tornoceratina
|
Superfamily:
|
Tornoceratoidea
|
Family:
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Tornoceratidae
|
Subfamily:
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Falcitornoceratinae
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Genus:
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Falcitornoceras
|
Species:
|
crebriseptum aff. |
Qualifier:
|
af |
Author:
|
House 1970,p.670
|
Lower Boundary:
|
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
Upper Boundary:
|
UD3B--UD3C:(delphinus Zone base) [14,55], 368 million years
|