Suborder:
|
Goniatitina
|
Superfamily:
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Shumarditoidea
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Family:
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Parashumarditidae
|
Genus:
|
Parashumardites
|
Species:
|
sellardsi |
Qualifier:
|
ss |
Author:
|
Plummer & Scott 1937,p.302
|
Lower Boundary:
|
UTX middle Gaptank Fm. base, 306.5 million years
|
Upper Boundary:
|
UTX upper-uppermost Gaptank, 300 million years
|