Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Euopisthobranchia
Ordo: Runcinacea
Superfamilia (1): Runcinoidea


Runcinacea Burn, 1963


  • Runcinida

Nomenclature: Originally introduced by Colosi (1915) as Runcinidea, a "sectio" (above familia level) of Tectibranchia containing the familia Runcinidae only. Spelling and rank emended by Colosi (1918: 86) to a "subsectio" Runcinida (of equal rank to Thecosomata) containing the familia Runcinidae only; by Burn (1963: 9) to subordo Runcinacea; ranked by Odhner (in Franc, 1968: 841) as ordo; spelling emended by Golikov & Starobogatov (1989: 68) to ordo Runciniformes. The name Runcinida as here listed was reinstated by Malaquias et al. (2009).

This reinstatement by WoRMS would appear to be inappropriate and in violation of the principles of taxonomy since a genus Runcinida already exists and since prior names for this ordo have previously been used. Until a renaming of either the genus or the ordo is done by the appropriate authorities, the ordo name Runcinacea will be used here as this treatment is also used by GBIF.