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Achatella
Taxonomy
Achatella was named by Delo (1935).
It was assigned to Pterygometopidae by Jell and Adrain (2002); to Phacopida by Sepkoski (2002); and to Pterygometopinae by Jaanusson and Ramsköld (1993), Swisher et al. (2016).
It was assigned to Pterygometopidae by Jell and Adrain (2002); to Phacopida by Sepkoski (2002); and to Pterygometopinae by Jaanusson and Ramsköld (1993), Swisher et al. (2016).
Species
Species lacking formal opinion data