†subfamily Hystricurinae Hupe 1953 (trilobite)
Trilobita - Proetida - Hystricuridae
Parent taxon: Hystricuridae according to J. M. Adrain et al. 2003
Sister taxa: Amblycranium, Etheridgaspis, Glabretina, Guizhouhystricurus, Hillyardininae, Hintzecurinae, Holubaspis, Hystricurus, Litzicurus, Millardicurus, Nyaya, Omuliovia, Paenebeltella, Parahystricurus, Paraplethopeltis, Psalikilus, Rollia, Svalbardicurus, Taoyuania, Tasmanaspis
Subtaxa: Flectihystricurus Lavadamia Tersella
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Ordovician of United States (10: Alaska, Idaho collections)
• Tremadoc of the Russian Federation (3)
• Skullrockian of United States (1: Utah)
Total: 14 collections including 15 occurrences