†Cyrtoproetus (Crassibole) Gandl 1980 (trilobite)
Artiopoda - Proetida - Phillipsiidae
Alternative spellings: Archegonus (Crassibole), Crassibole
Parent taxon: Cyrtoproetus according to G. Hahn et al. 2012
See also Brezinski 2000 and Jell and Adrain 2002
Sister taxa: Cyrtoproetus (Cyrtoproetus), Cyrtoproetus (Sinocyrtoproetus), Cyrtoproetus cracoensis, Cyrtoproetus korni, Cyrtoproetus roesenbeckensis
Subtaxa: Cyrtoproetus (Crassibole) crassus Cyrtoproetus (Crassibole) okypete Cyrtoproetus (Crassibole) tetula
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution: