Tyrrhenocythere, Ruggieri, 1955

Rausch, Lea & Stoica, Marius, 2019, AN EARLY PLEISTOCENE ANOMALOHALINE WATER OSTRACOD FAUNA FROM LAKE DEPOSITS OF THE HOMO ERECTUS-BEARING KOCABAŞ LOCALITY (SW TURKEY), Acta Palaeontologica Romaniae 15 (2), pp. 41-69 : 8

Tyrrhenocythere ex. gr. bailovi (Livental) in Mandelstam et al., 1962

1956 Cythereis bailovi -Suzin, p. 146, pl. VII, fig. 19

1962 Trachyleberis - Mandelstam, p. 151, pl. bailovi (Liv.) 20, fig. 9.

1986 Tyrrhenocythere - Yassini, p. 57, pl. 19, bailovi (Liv- figs. 10-12. ental)

Description. The carapace is rectangular to oblong in lateral view. The anterior end is broadly rounded with an arcuate slope in the lower part. The posterior end has a weakly pronounced shoulder that in general seems to be more prominent on the RV. The part below the shoulder is rounded whereas the area above it is steeply sloping. The ventral margin is concave in the anterior third, and the dorsal margin is almost straight, sloping gently towards the posterior end. The valves surface is covered by a fine pitted ornamentation. Towards the posterior-and the anterior end the ornamentation is turning into medium-sized longitudinally running meshes. The described features, excluding the ornamentation, are much more visible from the interior view. The marginal zone is broad and displays a number of branched pore channels. The muscle scar consists of two rows of imprints, owing to the division of the two median imprints into upper and lower ones. The hinge is well developed heterodont. Dimension: Male: l = 1,00 – 1,14 mm, h = 0,55 – 0,62 mm, b = 0,45 mm; Female: l = 0,85 – 1,07 mm, h = 0,50 – 0,61 mm.