The 109 species in 15 genera of the Acanthoparyphinae are also probably monophyletic, and are known from the Floian to the Ludfordian. The Cyrtometopinae were present between the Floian and the Upper Katian, enveloping 22 species in 5 genera, of which the monophyly is unclear.
The Acanthoparyphinae subfamily comprises 109 species in 15 genera, likely forming a single evolutionary lineage from the Floian to the Ludfordian period. The Cyrtometopinae subfamily existed between the Floian and Upper Katian periods, containing 22 species in 5 genera, with uncertain monophyly.