Bythocypris obtusata ( Sars, 1866 )

Sciuto, F & Rosso, M, 2015, Bathyal ostracods from the Santa Maria di Leuca deep-water coral province (northern Ionian Sea), Palaeontologia Electronica 8 (9), pp. 1-17 : 8

Bythocypris obtusata ( Sars, 1866)

Figure 6.2

1866 Bairdia obtusata Sars , p. 24.

1880 Bairdia obtusata Sars var. producta, Seguenza , p. 191.

1880 Cytheridea lucida Seguenza , p. 290, pl. 16, fig. 51.

1987 Bythocypris lucida (Seguenza) ; Aranki, p. 48, pl. 2, fig. 6.

1972 Bythocypris obtusata (Sars) ; Sissingh, p. 79, pl. 3, figs. 10, 11.

1972 Bythocypris lucida (Seguenza) ; Sissingh, p. 78, pl. 3, figs. 8, 9.

1975 Bairdia obtusata Sars ; Breman, p. 205, pl. 2, fig. 9.

1980 Bythocypris obtusata (Sars) ; Colalongo and Pasini, p. 52, pl. 2, figs. 9, 10.

1981 Bythocypris obtusata (Sars) ; Tsapralis, p. 83, pl. 4, figs. 1-3.

2008 Bythocypris obtusata (Sars) ; Sciuto and Rosso, p. 35, pl. 1, fig. 3.

Remarks. The species is widespread in the SML samples. It is one of two species found alive. B. obtusata is currently reported at 300 m WD in the Gulf of Naples ( Bonaduce and Pugliese, 1979), between 600 and 2669 m WD in the Atlantic-Mediterranean Region ( Bonaduce et al., 1983), at 145- 165 m water depth along the Norwegian and British coasts ( Sars, 1928) and in the Recent Mediterranean Sea between 150 and 2905 m ( Puri et al., 1964). Also the fossil record of this species points to bathyal palaeoenvironments (Tyrrhenian Sea: Colalongo et al., 1988, 1990; Le Castella: Colalongo, 1965; Capo Milazzo: Sciuto, 2003, 2005; Furnari: Sciuto and Rosso, 2008; Vrica: Colalongo and Pasini, 1980).

Figures

FIGURE 6. 1, Bairdoppilata conformis (Terquem, 1878). PMC. O FS 16. RV, external lateral view (scale bar equals 500 µm); 2, Bythocypris obtusata (Sars, 1866). PMC. O FS 17. LV, external lateral view (scale bar equals 500 µm); 3, Anchistrocheles tenera (Breman, 1975). PMC. O FS 18. LV, external lateral view (scale bar equals 200 µm); 4, Macropyxis adriatica (Breman, 1975). PMC. O FS 19. LV, external lateral view (scale bar equals 500 µm); 5, Argilloecia acuminata Müller, 1894. PMC. O FS 20. RV, internal lateral view (scale bar equals 100 µm); 6, Krithe monosteracensis (Seguenza, 1880). PMC. O FS 21. RV, internal lateral view (trasparency, scale bar equals 250 µm); 7, Echinocythereis echinata Sars, 1866. PMC. O FS 22. RV, external lateral view (scale bar equals 500 µm); 8, Henryhowella ex H. hirta (Costa, 1853) group. PMC. O FS 23. LV, external lateral view (scale bar equals 200 µm); 9, Bathycythere vanstraateni Sissingh, 1971. PMC. O FS 24. RV, external lateral view (scale bar equals 200 µm); 10, Cytheropteron hadriaricum Bonaduce et al., 1975. PMC. O FS 25. RV, external lateral view (scale bar equals 100 µm); 11, Cytheropteron testudo Sars, 1869. PMC. O FS 26. RV, external lateral view (scale bar equals 200 µm); 12, Pseudocythere caudata Sars, 1866. PMC. O FS 27. LV, external lateral view (scale bar equals 200 µm); 13, Monoceratina mediterranea Sissingh, 1971. PMC. O FS 28. RV, external lateral view (scale equals bar 200 µm); 14, Paradoxostoma simile Müller, 1894. PMC. O FS 29. LV, internal lateral view (trasparency, scale bar equals 200 µm). (PMC. O FS 16–29 = Paleontological Museum Catania. Ostracoda Figured Specimens number 16 to 29. RV = right valve; LV = left valve).