Artiopoda - Olenida - Pterocephaliidae
Alternative spelling: Petrocephaliidae
Parent taxon: Olenida according to J. M. Adrain 2011
See also Harrington et al. 1959, Jell and Adrain 2002, Paterson and Laurie 2004 and Whittington et al. 1997
Sister taxa: Andrarinidae, Aphelaspidae, Asaphiscidae, Cedariidae, Dokimokephalidae, Eulomidae, Idahoiidae, Loganellidae, Olenidae, Parabolinoididae
Subtaxa: Anechocephalus Aphelaspidinae Beigongia Bromella Cilia Dikelocephalites Flabellocephalus Housia Housiinae Jubileia Labiostrella Lunacephalus Luotuolingia Maladioides Metachangshania Morosa Paramaladioidella Pauciella Pedinaspis Pedinocephalites Pelicephalus Plesiocilia Proapatokephaloides Prodikelocephalites Protemnites Pseudaphelaspis Pterocephaliinae Pulchricapitus Stenambon Tumicephalus Uxunella Yangweizhouia Yingziaspis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Taoyuanian of China (7 collections), the Russian Federation (6), South Korea (10)
• Cambrian of Australia (2), Canada (12: Alberta, British Columbia, Newfoundland, Yukon), China (8), Kazakhstan (18), the Russian Federation (17), South Korea (2), United States (210: Alaska, Arkansas, California, Indiana, Missouri, Montana, Nevada, Nevada and Utah, Oklahoma, Pennsylvania, Texas, Utah, Wisconsin, Wyoming)
Total: 292 collections including 420 occurrences