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TaxNo: 6314Proshumardites crassatus
Suborder: Goniatitina
Superfamily: Goniatitoidea
Family: Agathiceratidae
Genus: Proshumardites
Species: crassatus
Qualifier: ss
Author: Yang 1978,p.180
Lower Boundary: Pendleian--Arnsbergian [PND--ARN], 324 million years
Upper Boundary: Arnsbergian--Chokierian [ARN--CHO], 319 million years