Concise hierarchy

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

Current position

Umbraculoidea (Superfamily) Dall, 1889 (1827)

Ref: P. Bouchet & J.-P. Rocroi, 2005: 261.

Alternative positions

Notaspidea (Order) Fischer, 1883	Ref: K.J. Boss, 1982: 1033.
Notaspidea (Suborder) Fischer, 1883	Ref: E.E. Ruppert et al., 2004: 341.
Pleurobranchoidea (Superfamily) Gray, 1827	Ref: V.G. Millard, 1997: 218.
Tylodinoidea (Superfamily) J.E. Gray, 1847	Ref: R.H. de Bruyne, 2003: 313.

Historical positions

Umbraculoidea (Superfamily) Dall, 1889 (1827)	Ref: P. Bouchet & J.-P. Rocroi, 2005: 261.
Notaspidea (Suborder) Fischer, 1883	Ref: E.E. Ruppert et al., 2004: 341.
Tylodinoidea (Superfamily) J.E. Gray, 1847	Ref: R.H. de Bruyne, 2003: 313.
Gastropoda (Class) Cuvier, 1795	Ref: P. Bouchet et al., 2001: 201. [rough position]
Pleurobranchoidea (Superfamily) Gray, 1827	Ref: V.G. Millard, 1997: 218.
Notaspidea (Order) Fischer, 1883	Ref: K.J. Boss, 1982: 1033-1034.

Number of Subtaxa

2025	Available in Systema Naturae 2000	3g;2s
1989-present	Systema Naturae 2000	2g
1997	V.G. Millard: 218	[2g]
1982	K.J. Boss: 1034	2g