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Taxonomy
Stenorhachis was named by Hintze and Jaanusson (1956) [Sepkoski's age data: O Aren]. Its type is Isoteloides genalticurvatus.
It was assigned to Ptychopariida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (2002), Fortey and Bruton (2013).
It was assigned to Ptychopariida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (2002), Fortey and Bruton (2013).
Species