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TaxNo: 4622Family Agathiceratidae
Suborder: Goniatitina
Superfamily: Goniatitoidea
Family: Agathiceratidae
Qualifier: fa
Author: Arthaber 1911,p.178
Lower Boundary: DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
Upper Boundary: Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years