Clanculus de Montfort, 1810

Harzhauser, Mathias, 2021, The Cainozoic to present-day record of Circum-Mediterranean, NE Atlantic and North Sea Cantharidinae and Trochinae (Trochoidea, Gastropoda) - a synopsis, Zootaxa 4902 (1), pp. 1-81 : 62

Subgenus Clanculus de Montfort, 1810

Type species. Trochus pharaonius Linnaeus, 1758 , OD (de Montfort 1810: 191). Present-day, Red Sea .

Diagnosis. Low trochiform shells with regularly convex teleoconch whorls and impressed suture; denticulate aperture, basal columella tooth compound, parietal ridges usually strong. Sculpture consisting of beaded spiral cords; umbilicus deep ( Herbert 1993).

Remarks. Clanculus appears already during the middle Eocene in the NE Atlantic and is recorded in the Western Tethys during the early Oligocene.

= Otavia Risso, 1826 (type species: Trochus corallinus Gmelin, 1791 , SD ( Gray 1847: 144); present-day, Mediterranean Sea).

= Fragella Swainson, 1840 (type species: Trochus pharaonius Linnaeus, 1758 , SD ( Herrmannsen 1847: 240); present-day, Red Sea).

= Belangeria Fischer in Kiener & Fischer, 1879 (type species: Trochus scabrosus Philippi, 1850 , by monotypy ( Fischer 1879: 415); present-day, Indo-West Pacific).

= Macroclanculus Cotton & Godfrey, 1934 (type species: Monodonta undata Lamarck in Bruguière, 1816 , OD ( Cotton & Godfrey 1934: 78); present-day, Australia).