Suborder:
|
Goniatitina
|
Superfamily:
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Gastrioceratoidea
|
Family:
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Reticuloceratidae
|
Subfamily:
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Surenitinae
|
Genus:
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Melvilloceras |
Qualifier:
|
ge |
Author:
|
Nassichuk 1975,p.134
|
Lower Boundary:
|
U Halian--Bloydian, Brentwood base, 313 million years
|
Upper Boundary:
|
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|