Trilobita - Olenida - Aphelaspidae
Alternative spelling: Aphelaspididae
Parent taxon: Olenida according to B. D. E. Chatterton 2020
See also Adrain 2011 and Jell and Adrain 2002
Sister taxa: Andrarinidae, Asaphiscidae, Cedariidae, Dokimokephalidae, Eulomidae, Idahoiidae, Loganellidae, Olenidae, Parabolinoididae, Pterocephaliidae
Subtaxa: Amorphella Aphelaspis Apheloides Dicanthopyge Erixanium Eugonocare Kazakhius Kobayashella Listroa Litocephalus Maduiya Nganasanella Notoaphelaspis Olenaspella Olentella Pseudeugonocare Taenicephalites Taenora Tamaranella
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Ordovician of Australia (1 collection)
• Taoyuanian of China (7), the Russian Federation (2), South Korea (10)
• Cambrian of Australia (26), Canada (14: British Columbia, Yukon), China (6), France (1), Kazakhstan (22), the Russian Federation (32), Spain (1), Turkey (2), United States (138: Alabama, Alaska, Georgia, Montana, Nevada, Nevada and Utah, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Wyoming)
Total: 262 collections including 343 occurrences