Guildfordia

The imperforate shell is wheel-shaped. It is low-conic and granulose above, convex below. The periphery is armed with long slender radiating spines, which are concealed at the sutures. The operculum is flat, with a subobsolete arcuate rib outside. The central tooth of the radula has no cusps.^[2]

This marine genus occurs off the Philippines, Indo-China, Indo-Malaysia, Papua New Guinea, Eastern Indian Ocean, Oceania, and off Australia (Northern Territory, Queensland, Western Australia).

Species within the genus Guildfordia include:

• Guildfordia aculeata Kosuge, 1979^[3] - Aculeate Star Turban
• † Guildfordia hendersoni (Marwick, 1934)
• † Guildfordia megapex (Beu, 1970)
• † Guildfordia ostarrichi Pacaud, 2017
• Guildfordia radians Dekker, 2008^[4]
• † Guildfordia subfimbriata (Suter, 1917)
• Guildfordia superba Poppe, Tagaro & Dekker, 2005^[5] - Superb Star Turban
• Guildfordia triumphans (Philippi, 1841)^[6] - Triumphant Star Turban
• Guildfordia yoka Jousseaume, 1899^[7] - Yoka Star Turban

Species brought into synonymy

• Guildfordia delicata Habe & Okutani, 1983: synonym of Guildfordia yoka Jousseaume, 1888
• Guildfordia gloriosa Kuroda & Habe in Kira, 1961: synonym of Bolma henica (Watson, 1885)
• Guildfordia heliophorus Gray: synonym of Astraea heliotropium (Martyn, 1784)
• Guildfordia kurzi Petuch, 1980 - Kurz's Star Turban: synonym of Guildfordia aculeata Kosuge, 1979
• Guildfordia tagaroae Alf & Kreipl, 2006:^[8] synonym of Guildfordia aculeata Kosuge, 1979

Taxon inquirendum

• Guildfordia monilifera (Hedley & Willey, 1896) (possibly a synonym of Guildfordia aculeata)