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TaxNo: 5590Genus Pseudaktubites
Suborder: Goniatitina
Superfamily: Shumarditoidea
Family: Shumarditidae
Genus: Pseudaktubites
Qualifier: ge
Author: Boardman et al. 1994,p.50
Lower Boundary: UOK Coffeyville Fm. top, 305.9 million years
Upper Boundary: RUS Zhigulian--Orenburgian [Ruzhentsev], 305 million years