Cadulus subfusiformis ( Sars M., 1865 )

Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), Zootaxa 4186 (1), pp. 1-97 : 51

Cadulus subfusiformis ( Sars M., 1865)

Fig. 11 g

Siphonodentalium subfusiforme Sars M., 1865 (p. 301).

Cadulus subfusiformis M. Sars—Jeffreys 1883 [a] (p. 664).

Cadulus subfusiformis (M. Sars) —Pilsbry & Sharp 1898 (p. 163, pl. 24, figs. 29, 31, 32). Gadila subfusiforme (M. Sars) — Di Geronimo et al. 2001 (pl. 1, fig. 14). Cadulus subfusiforme ( M. Sars, 1865) — Petersen 2004 (p. 60, fig. 43).

Cadulus subfusiformis ( Sars M., 1865) — Repetto et al. 2005 (p. 359, mid right fig.).

Diagnostic characters. Weakly curved, thin shell; moderate middle expansion; subequal apertures. Larval shell: not available.

Remarks. Cadulus jeffreysi (Monterosato, 1875) differs in having a more inflated shell with apertures of different size.

Occurrence. Cores BC21 (1 specimen), BC51 (1), BC52 (1). Maximum length: 1.5 mm.

Distribution and habitat. Cadulus subfusiformis is distributed from the NE Atlantic (Scandinavia, including Norway fjords) to the Bay of Biscay and the western Mediterranean; it is a predator species living on muddy and clayey bottoms in the 80–1300 m depth range, regarded as characteristic of VP (bathyal mud) biocoenosis (Pilsbry & Sharp 1898; Di Geronimo & Li Gioi 1980; Di Geronimo & Bellagamba 1985; Buhl-Mortensen & Høisaeter 1993; Petersen 2004).

Fossil record. Miocene of Belgium; Pliocene of northern Italy; Pleistocene of Denmark ( Petersen 2004; Marquet 2006; Tabanelli 2008); in the Mediterranean, it was sometimes reported as restricted to Wurm period ( Di Geronimo & Li Gioi 1980; Di Geronimo & Bellagamba 1985).

Figures

FIGURE 11. a – c: Antalis agilis (Sars M. in Sars G. O., 1872), samples BC 04 (a) and BC 72 (b – c), scale bars: 5 mm (a), 0.2 mm (b, posterior aperture), 1 mm (c, anterior aperture); d – f: Entalina tetragona (Brocchi, 1814), sample BC 72, scale bars: 2 mm (d), 0.1 mm (e, posterior aperture), 0.5 mm (f, anterior aperture); g: Cadulus subfusiformis (Sars M., 1865), sample BC 52, scale bar 0.5 mm; h – k: Propilidium exiguum (Thompson, 1844), sample BC 66, scale bars: 1 mm (h – i), 0.1 mm (j – k, protoconch); l – n: Emarginula adriatica (Costa O. G., 1830), sample BC 72, scale bars: 2 mm (l – m), 0.1 mm (n, protoconch); o – q: Emarginula multistriata Jeffreys, 1882, sample BC 70, scale bars: 1 mm (o – p), 0.1 mm (q, protoconch); r – t: Emarginula tenera Locard, 1982, sample BC 71, scale bars: 1 mm (r – s), 0.1 mm (t, protoconch).