†superfamily Tremataspidoidea Afanassieva 1991 (vertebrate)
Petromyzontida - Cephalaspidiformes
Parent taxon: Thyestiida according to R. S. Sansom 2009
Sister taxa: Auchenaspis, Ilemoraspis, Kiaeraspidoidea, Procephalaspis, Thyestes, Witaaspis
Subtaxa: Aestiaspis Saaremaaspis Tyriaspis
Type: Tremataspis
Ecology: fast-moving nektonic carnivore
Distribution:
• Devonian of the Russian Federation (1 collection)
• Silurian of Estonia (5), North Atlantic (1), Sweden (3)
Total: 10 collections including 12 occurrences