Gymnura

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Classis: Chondrichthyes
Subclassis: Elasmobranchii
Superordo: Rajomorphii
Ordo: Myliobatiformes
Superfamilia: Myliobatoidea
Familia: Gymnuridae
Genus: Gymnura

References

* Jacobsen, I.P.; Bennett, M.B. 2009: A taxonomic review of the Australian butterfly ray Gymnura australis (Ramsay & Ogilby, 1886) and other members of the family Gymnuridae (order Rajiformes) from the Indo-West Pacific. Zootaxa, 2228: 1-28. Abstract & excerpt