†Acidaspis Murchison 1839 (trilobite)
Trilobita - Lichida - Odontopleuridae
Synonym: Pseudomonaspis Richter and Richter 1917 [objective synonym]
Parent taxon: Odontopleuridae according to H. B. Whittington 1956
Sister taxa: Acidaspidinae, Anacaenaspis, Apianurinae, Borkopleura, Ceratocephala, Ceratocephalinae, Ceratonurus, Chlustinia, Dicranurus, Dudleyaspis, Eoleonaspis, Exallaspis, Gaotania, Hispaniaspis, Isoprusia, Ivanopleura, Koneprusia, Koneprusiinae, Laethoprusia, Leonaspis, Meadowtownella, Miraspis, Odontopleurinae, Orphanaspis, Primaspis, Proceratocephala, Selenopeltis, Selenopeltoides, Stelckaspis, Taemasaspis, Uriarra, Whittingtonia
Subtaxa: Acidaspis (Glaphurus)
Ecology: fast-moving low-level epifaunal carnivore