Concise hierarchy

(Kingdom) Animalia - (Phylum) Mollusca - (Class) Gastropoda - (Order) Opisthobranchia

Subsequent entries

Bulla (Genus) Linnaeus, 1758

Current position

Bulloidea (Superfamily) Gray, 1827

Ref: P. Bouchet & J.-P. Rocroi, 2005: 258.

Alternative positions

Bullacea (Superfamily)	Ref: F.J. Springsteen & F.M. Leobrera, 1986: 284.
Cephalaspidea (Order) Fischer, 1883	Ref: K.J. Boss, 1982: 1025.
Cephalaspidea (Suborder) Fischer, 1883	Ref: E.E. Ruppert et al., 2004: 341.

Historical positions

Bulloidea (Superfamily) Gray, 1827	Ref: P. Bouchet & J.-P. Rocroi, 2005: 258.
Cephalaspidea (Suborder) Fischer, 1883	Ref: E.E. Ruppert et al., 2004: 341.
Bulloidea (Superfamily) Gray, 1827	Ref: R.H. de Bruyne, 2003: 313.
Gastropoda (Class) Cuvier, 1795	Ref: P. Bouchet et al., 2001: 199. [rough position]
Bulloidea (Superfamily) Gray, 1827	Ref: V.G. Millard, 1997: 211.
Bullacea (Superfamily)	Ref: F.J. Springsteen & F.M. Leobrera, 1986: 284, 364.
Cephalaspidea (Order) Fischer, 1883	Ref: K.J. Boss, 1982: 1025-1026.

Number of Subtaxa

2024	Available in Systema Naturae 2000	3g;3s
1989-present	Systema Naturae 2000	(>1g)
1997	V.G. Millard: 211	[2g]
1982	K.J. Boss: 1025	(>1g)