†family Pharostomatidae Hupé 1953 (trilobite)
Trilobita - Phacopida - Pharostomatidae
Parent taxon: Calymenina according to J. M. Adrain 2011
See also Jell and Adrain 2002
Sister taxa: Bathycheilidae, Bavarillidae, Calymenidae, Homalonotidae
Subtaxa: Altiplanelaspis Paivinia Pharostomina Ptychometopus Thulincola
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Billingen of the Russian Federation (1 collection)
• Arenig of France (1)
• Ordovician of Argentina (6), Bolivia (3), Czechia (1), France (1), Mexico (2), Morocco (1), Spain (2), the United Kingdom (5)
Total: 23 collections including 25 occurrences