Caspiocypris carica ( Freels, 1980 )

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 : 11

Caspiocypris carica ( Freels, 1980)

Fig. 6 a-h

1980 Candona (Caspiocypris) carica n. sp. -Freels, p.145, pl. 156, fig. 14 – 16.

Description. The carapace has a trapezoidal to elongated shape in lateral view. The dorsal margin is almost straight, slightly convex and sloping towards the anterior end that is broadly rounded and continues smoothly onto the ventral margin. The posterior end is pointed and the LV shows a “rostrum- like” end a bit above the joint with the ventral boarder. The ventral margin displays a clear concavity mid-length that is more accentuated in the RV. The postero-ventral joint is slightly pointed upwards on the LV. The valves surface is smooth. The inner lamella is broadly developed in both the anterior-and the posterior end. Marginal pore canals are straight. Dimension: L = 0,91 – 1,28 mm, H = 0,44 – 0,67 mm, the minimum sizes include juveniles too.

Remarks. The observed species differentiates from Caspiocypris vaga Stancheva (1964) , mentioned from the upper Maeotian deposits from Bulgaria, which is smaller in size and lacks the pointed posterior end. The ventral concavity in C. vaga Stancheva is located behind the mid-length of the valve. Also, the dorsal margin of C. vaga in the LV shows a slight median concavity that is not clearly sloping towards the anterior like in our species. Quite similar forms are described under the name Candona slamkovae , by Pipík and Bodegard (2007) from the Pannonian of the Turiec Basin in Slovakia, but differences concerning the outline, especially of the LV are present. Candonids of “trapezoid” shape are often recorded in sediments from Lake Pannon (e.g., Krstić, 1989; Pipík and Bodegard, 2007) as well as from the Maeotian of the Dacian Basin ( Stancheva, 1990; Olteanu, 1989, 1995).

Chronostratigraphical and geographical distribution. The type locality of the species is a sedimentary succession 15 km NE of Denizli (Turkey) within Irlaganlı Valley. The species is possibly ranging from the late Miocene to Pliocene ( Freels, 1980). The species commonly occurs in section A.

Ecology. Recent living representatives of the genus and subgenus inhabit a wide range of aquatic habitats, ranging from littoral and profundal zones of lakes or swamps to slightly salty inland and coastal waters ( Meisch, 2000).

Figures

Fig. 6a-h Caspiocypris carica; a, c LV, external view; b, d RV, external view; e LV, internal view; f RV, internal view; g LV, external view, A1 juvenile; h RV, external view, A1 juvenile; (all specimens from section A, samples 0 m – 35,5 m).