Umbraculoidea

Umbraculoidea is a superfamily of unusual false limpets with a thin soft patelliform shell, marine gastropod molluscs in the clade Umbraculida, within the clade Euopisthobranchia.

Umbraculoidea
A live individual of Tylodina perversa in situ
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Euopisthobranchia
Superfamily:	Umbraculoidea Dall, 1889 (1827)
Superfamilies
See text

There are two families in this superfamily, which is listed as the only superfamily in the clade Umbraculida within the informal group Opisthobranchia in the taxonomy of Bouchet & Rocroi (2005).^[1]

Taxonomy

A study by Grande et al., published in 2004, concluded that Umbraculoidea was a sister clade to the Cephalaspidea (Acteonoidea excluded).^[2]

2005 taxonomy

Umbraculoidea contains two families:

• Family Umbraculidae
• Family Tylodinidae

2010 taxonomy

Jörger et al. (2010)^[3] moved Umbraculoidea to the Euopisthobranchia.