†family Pterocephalidae Kobayashi 1935 (trilobite)
Artiopoda - Asaphida - Pterocephalidae
Parent taxon: Asaphida according to C. J. Bentley et al. 2006
See also Jell and Adrain 2002
Sister taxa: Aethodionide, Anomocarellidae, Anomocaridae, Anomocaroidea, Asaphina, Asaphoidea, Cyclopygoidea, Dikelocephaloidea, Eurekiidae, Hungaiidae, Ordosiidae, Parabumasttides, Pseudocyclopyge, Remopleuridae, Rhyssometopidae, Trinucleoidea
Subtaxa: Camaraspis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Cambrian of Antarctica (1 collection), Canada (3: Alberta, Newfoundland and Labrador), the Russian Federation (2), United States (48: Minnesota, Missouri, Montana, Oklahoma, Pennsylvania, South Dakota, Texas, Wisconsin, Wyoming)
Total: 54 collections including 56 occurrences