Blackfordia

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Phylum: Cnidaria
Classis: Hydrozoa
Ordo: Conica
Familia: Blackfordiidae
Genus: Blackfordia

References

* Bardi, J.; Marques, A.C. 2009: The invasive hydromedusae Blackfordia virginica Mayer, 1910 (Cnidaria: Blackfordiidae) in southern Brazil, with comments on taxonomy and distribution of the genus Blackfordia. Zootaxa, 2198: 41-50. Abstract & excerpt