Trilobita - Odontopleurida - Odontopleuridae
Parent taxon: Odontopleuridae according to J. M. Adrain and L. Ramskold 1997
See also Ramsköld and Chatterton 1991
Sister taxa: Acanthalomina, Apianurinae, Borkopleura, Ceratocephalinae, Ceratonurus, Chlustinia, Dicranurus, Dudleyaspis, Eoleonaspis, Gaotania, Globulaspis, Hispaniaspis, Isoprusia, Ivanopleura, Koneprusia, Koneprusiinae, Laethoprusia, Meadowtownella, Miraspidinae, Odontopleurinae, Orphanaspis, Periallaspis, Proceratocephala, Selenopeltis, Selenopeltoides, Stelckaspis, Taemasaspis, Uriarra
Subtaxa: Exallaspis Gondwanaspis
Type: Acidaspis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Devonian of Australia (4 collections), France (3), Germany (2), Morocco (1)
• Silurian of Canada (22: Quebec), Estonia (1), Latvia (2), Mexico (2), Norway (1), Sweden (5), the United Kingdom (13), United States (1: Illinois)
• Ordovician of the United Kingdom (2)
Total: 59 collections including 61 occurrences