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TaxNo: 2859Shumardites aktubensis
Suborder: Goniatitina
Superfamily: Shumarditoidea
Family: Shumarditidae
Genus: Shumardites
Species: aktubensis
Qualifier: ss
Author: Ruzhencev 1950,p.177
Lower Boundary: RUS Zhigulian--Orenburgian [Ruzhentsev], 305 million years
Upper Boundary: Gzhelian--Asselian [C--P], 299 million years