Cyprideis pannonica ( Méhes, 1908 )

RAUSCH, LEA, STOICA, MARIUS & LAZAREV, SERGEI, 2020, A Late Miocene - Early Pliocene Paratethyan Type Ostracod Fauna From The Denizli Basin (Sw Anatolia) And Its Palaeogeographic Implications, Acta Palaeontologica Romaniae 16 (2), pp. 3-56 : 24

Cyprideis pannonica ( Méhes, 1908)

Fig. 15 a-j

1908 Cytheridea pannonica n.sp. - Méhes, p. 61, Tab. XI, Fig. 7.

1929 Cyprideis pannonica Méhes- Zalányi, p. 73, text-fig. 35-1.

1990 Cyprideis pannonica (Méhes) - Sokač, p. 692.

2013 Cyprideis pannonica (Méhes) - Stoica et al., p. 140, pl. 2, fig. 1.

Description. The carapace has an elongate to subovate shape in lateral view. The dorsal margin is gently arched and slightly inclined towards the posterior. The posterior end is somewhat narrower than the obtuse rounded anterior margin. Both, the anterior-and the posterior end, pass smoothly onto the almost straight running ventral margin. The greatest width of the carapace is slightly in front of the mid-length. The valves surface is smooth and randomly distributed normal sieve-pores are present. Sexual dimorphism is occurring and females show a more ovalshape, whereas male valves have a narrower posterior part. The marginal zone is moderately developed. The internal features do not deviate to those of other Cyprideis specie s. Dimension: L = 0,48 – 1,04 mm, H = 0,30 – 0,58 mm, the minimum sizes include juveniles too.

Chronostratigraphical and geographical distribution. This species is commonly found inside Pannonian deposits of the Pannonian Basin of Hungary, Austria, Yugoslavia and Czechoslovakia ( Sokač, 1990). It has further been described from lower Pontian sediments of the Dacian Basin ( Stoica et al., 2013). Outside the Paratethys it is mentioned from Lago-Mare deposits of the Sorbas Basin in SE Spain ( Gliozzi et al., 2005), the Messinian sediments of the Djebel Kechabta section in northern Tunisia ( Benson, 1976) and the early Pannonian of the Gelibolu Peninsula in NW Turkey ( Tunoğlu, 2001).

Figures

Fig. 15a-j Cyprideis pannonica; a LV, external view, ♀; b RV, external view, ♀; c LV, internal view, ♀; d RV, internal view, ♀; e LV, external view, small sized adult; f RV, external view, small sized adult; g LV, external view, A1 juvenile; h RV, external view, A1 juvenile; i LV, external view, A2 juvenile; j RV, external view, A2 juvenile; (all specimens from section A, samples 0 m – 35,5 m).