Artiopoda - Agnostida - Peronopsidae
Full reference: E. B. Naimark. 2012. Hundred species of the genus Peronopsis Hawle et Corda, 1847. Paleontological Journal 46(9):945-1057
Parent taxon: Pentagnostus according to E. B. Naimark 2012
Sister taxa: Pentagnostus admirabilis, Pentagnostus anabarensis, Pentagnostus bonnerensis, Pentagnostus brighamensis, Pentagnostus endemicus, Pentagnostus krusei, Pentagnostus praecurrens, Pentagnostus shabaktensis, Pentagnostus shergoldi
Subtaxa: Pentagnostus (Meragnostus) segmenta
Ecology: nektonic suspension feeder
Distribution:
• Delamaran of United States (1: Utah collection)
• Cambrian of Canada (5: Newfoundland and Labrador), United States (8: Nevada, Utah)
Total: 14 collections each including a single occurrence