Artiopoda - Asaphida - Asaphidae
Alternative spelling: Megistaspidella
Parent taxon: Megistaspis according to Jaanusson 1956
See also Jell and Adrain 2002
Sister taxa: Megistaspis (Ekeraspis), Megistaspis (Megistaspis), Megistaspis (Paramegistaspis), Megistaspis (Rhinoferus), Megistaspis limbatus, Megalaspis lata, Megalaspis pugiocauda, Megalaspis saltaensis, Megalaspis belemnurus, Megalaspis rudis
Subtaxa: Megistaspis (Megistaspidella) acuticauda Megistaspis (Megistaspidella) bombifrons Megistaspis (Megistaspidella) extenuata Megistaspis (Megistaspidella) gigas
Type: Entomostracites extenuatus
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Hunderum of Sweden (1 collection)
• Valaste of Sweden (1)
• Ordovician of Norway (1), the Russian Federation (23), Sweden (23)
Total: 49 collections each including a single occurrence