Classification

Class: Gastropoda

Clade: Littorinimorpha

Superfamily: Xenophoroidea

Family: Xenophoridae

Major Genera

• Genus: Stellaria
• Genus: Tugurium
• Genus: Xenophora

The Stellaria genus, in this family, is notable for shells occurring in fantastic radiating sunburst shapes, or stars, and several species exhibit   particularly long spines. Molluscs in the Tugurium and Xenophora genera typically  decorate their shell by selectively cementing small scrap shells on their dorsal surface. Stripped of these decorations, the latter shells are similar in form to star shell and other species in  the Trochacea superfamily. Identifying characteristics of Xenophoridae are an operculum with nucleus off-centered, and a shell interior that is not nacreous (unlike the Trochidae). The family has few species. All are tropical in distribution.

XENOPHORIDAE
Xenophora minuta	Xenophora (Xenophora) cerea	Xenophora (Xenophora) cerea torrida (var.)	Xenophora (Xenophora) conchyliophora	Xenophora (Xenophora) conchyliophora robusta (var.)
Xenophora (Xenophora) corrugata	Xenophora (Xenophora) corrugata tulearensis (var.)	Xenophora (Xenophora) crispa	Xenophora (Xenophora) crispa senegalensis (var.)	Xenophora (Xenophora) granulosa
Xenophora (Xenophora) japonica	Xenophora (Xenophora) mekranensis konoi	Xenophora (Xenophora) neozelanica neozelanica	Xenophora (Xenophora) neozelanica kermadecensis	Xenophora (Xenophora) pallidula
Xenophora (Xenophora) peroniana peroniana	Xenophora (Xenophora) peroniana kondoi	Xenophora (Xenophora) solarioides	Xenophora (Xenophora) tenuis	Xenophora (Austrophora) flindersi
Onustus caribaeus	Onustus exutus	Onustus indicus	Onustus indicus helvaceus (var.)	Onustus longleyi
Stellaria chinensis	Stellaria gigantea	Stellaria lamberti†	Stellaria solaris	Stellaria solaris paucispinosa (var.)
Stellaria testigera digitata	Stellaria testigera profunda