Seraphs subconvolutus (d’Orbigny, 1852)

Figure 5I

1852 Terebellum subconvolutum d’Orbigny, p. 8, no. 140. Fuchs 1870, p. 12. Jung 1974, p. 26. Harzhauser 2007, p. 104. Caze et al. 2010, p. 438. Vergneau 1967, pp. 203, 206. = Seraphs (Seraphs) subconvolutus d’Orbigny — Jung 1974, p. 26, pl. 8, figs. 1–10, tf. 18. = Seraphs subconvolutus d’Orbigny — Harzhauser 2007, p. 104, pl. 4, fig. 9. Harzhauser 2009, p. 138. Caze et al. 2010, p. 438, fig. 14.

1852 Terebellum subfusiformis d’Orbigny, p. 8, no. 141. Fisher 1873, p. 377, no. 651. Jung 1974, p. 26. = Terebellum (Terebellum) subfusiforme d’Orbigny – Sacco 1893, p. 21, pl. 2, fig. 19. Jung 1974, p. 26.

1880 Terebellum fusiforme saldatum de Gregorio, p. 22, pl. V, fig. 22.

1880 Terebellum fusiforme retractum de Gregorio, p. 20, pl. V, figs. 24, 25. Jung 1974, p. 17. Eames 1952, p. 74. = Terebellum retractum de Gregorio — Pacaud 2008, p. 727.

Terebellum convolutum Lamarck — Grateloup 1834, p. 314. d’Orbigny 1852, p. 8, no. 140. Fuchs 1870, p. 12. Jung 1974, p. 26. Caze et al. 2010, p. 438.

Terebellum fusiforme Lamarck — Grateloup 1834, p. 315. d’Orbigny 1852, p. 8, no. 141. Fisher 1873, p. 377. Jung 1974, pp. 2, 18, pl. 3, figs. 4, 5. Caze et al. 2010, p. 438. Harzhauser 2007, p. 104.

Seraphs volutatus Solander —Quaggioto & Mellini 2008, figs. 24, 25.

Type material. Lectotype — MNHN UBT 65-2-120 (Caze et al. 2010). The type measures 28 mm (incomplete) in length with a width of 6.5 mm (Jung 1974).

Type locality. Gaas, France [Oligocene] .

Diagnosis. The shell is cylindrical with a long, narrow aperture. The labial callus is thin in contrast to the labrum, which is slightly thickened and prosocyrt below the adapical end of the aperture. Above the adapical end of the aperture the labrum runs antispiral, reaching the apex after about half a volution. The columella is slightly bent backward near the base.

Distribution. MIOCENE—Aquitanian— Oman Gebel Madrakah (Harzhauser 2007). OLIGOCENE— France Lesperon (‘Grateloup’ in Jung 1974); La Souys (‘Magne’ in Jung 1974). Italy Tongriano of Cassinelle (‘Sacco’ in Jung 1974); Latterfiano (‘Fabiani’ in Jung 1974); Castelgomberto (Jung 1974); Mt. Della Cariolo Bei Polescella (Fuchs, 1870); Mt Castellaro (Fuchs, 1870); Mt Grumi (Fuchs 1870). Rupelian— France Gaas, Landes (Fuchs 1870; Jung 1974; Caze et al. 2010). Italy Veneto (‘Fabiani’ in Jung 1974). Chattian— Oman Karmah Pass, Duqm (Harzhauser 2007); Madrakah Cliff (Harzhauser 2007). EOCENE—Lutetian— Italy San Giovanni Ilarione (de Gregorio 1880).

Remarks. Seraphs subconvolutus is similar in form to S. naricus, both being slender and having a labrum that ascends the spire. However, these species are geographically distinct, with S. naricus arising out of Pakistan.