Trilobita - Trinucleida - Raphiophoridae
Alternative spelling: Endymioniidae
Parent taxon: Raphiophoridae according to O. A. Hoel 1999
See also Fortey 1975
Sister taxa: Ampyxina, Ellsaspis, Kanlingia, Lonchodomas, Malinaspis, Malongullia, Nambeetella, Nanshanaspis, Pseudampyxina, Raphioampyx, Raphiophorinae, Raymondella, Sinampyxina
Subtaxa: Anisonotella Carinocranium Endymionia Lehnertia Pytine Salteria
Ecology: fast-moving low-level epifaunal suspension feeder
Distribution:
• Whiterockian of Canada (5: Newfoundland and Labrador collections), Norway (2), United States (2: Nevada)
• Chazyan of Canada (1: Newfoundland and Labrador)
• Arenig of China (1), Norway (1)
• Ordovician of Argentina (1), Australia (4), Canada (1: Newfoundland and Labrador), China (4), Norway (4), Sweden (2), the United Kingdom (6), United States (3: Virginia)
• Tremadoc of Canada (1: Alberta)
• Ibexian of Norway (1)
Total: 39 collections including 45 occurrences