Family NERINEIDAE Zittel, 1873 (pars) (Fig. 5 A-K)

Phaneroptyxidae Pchelintsev, 1965: 126.

TYPE GENUS. — Nerinea Deshayes, 1827 (1827: 535) .

TYPE SPECIES. — Nerineamosae Deshayes, 1821(1821:535).

FAMILY CHARACTERS . — Shells of this variable group of medium size to very large, high oviform to broad turriculate, broadly umbilicate to anomphalous.Whorls high, cylindrical to convex, smooth to strongly sculptured. Last whorl high, periphery evenly rounded to bluntly angular. Prominent siphonal fasciole, bent outwards. Aperture narrow, abapical of 1-3 collumellar plaits extending into aperture and delimiting siphonal notch (siphonal plait). 1 parietal and 1 palatal plait hardly elevated in aperture.

REMARKS

Figure 5 illustrates the high diversity of this family. Cossmann (1896) allocated members of this family to Ptygmatis but they differ by their siphonal canal. Cossmann (1896, 1898) positioned Phaneroptyxis (recte Nerinea) within the Itieriidae . Both possess a siphonal fasciole.In the Itieriidae the whorls are narrow and embrace the preceding ones almost completely.