Superfamily Sphaerularioidea Lubbock 1861 (roundworm)
Parent taxon: Tylenchomorpha according to G. O. Poinar 2011
Sister taxon: Aphelenchoidea
Subtaxa: Allantonematidae Anguinidae Iotonchidae Sphaerulariidae
Distribution:
• Miocene of the Dominican Republic (2 collections)
• Eocene of the Russian Federation (1)
Total: 3 collections including 11 occurrences