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TaxNo: 5864Genus Preshumardites
Suborder: Goniatitina
Superfamily: Shumarditoidea
Family: Shumarditidae
Genus: Preshumardites
Qualifier: ge
Author: Plummer & Scott 1937,p.288
Lower Boundary: U Desmoinesian--Missourian [DES--MIS], 306.5 million years
Upper Boundary: U Missourian--Virgilian [MIS--VIR], 305 million years