Suborder:
|
Anarcestina
|
Superfamily:
|
Triainoceratoidea
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Family:
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Pharciceratidae
|
Genus:
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Stenopharciceras
|
Species:
|
kseirense+ |
Qualifier:
|
ss |
Author:
|
Termier & Termier 1950,pl.150
|
Lower Boundary:
|
cristatus--disparilis Zone [18,70], 386.8 million years
|
Upper Boundary:
|
Givetian--Frasnian [GIV--FRS], 385.3 million years
|