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TaxNo: 1497Meropharciceras disciforme+
Suborder: Anarcestina
Superfamily: Triainoceratoidea
Family: Petteroceratidae
Genus: Meropharciceras
Species: disciforme+
Qualifier: ss
Author: Bensaïd 1974,p.117
Lower Boundary: MAR one alpha 1-- one alpha 2 of Bensaid, 388 million years
Upper Boundary: Givetian--Frasnian [GIV--FRS], 385.3 million years