Candona (Typhlocyprella) sp. ( Krstić, 1972 )

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 : 18

Candona (Typhlocyprella) sp. ( Krstić, 1972)

Fig. 11a-k

Description. This species is distinguished by its elongated subtrapezoidal shape and a sharp pointed posterior end. The dorsal margin is straight and angularly connected to the anterior-and posterior end. The anterodorsal margin shows a slight concavity, more visible on the RV. The ventral boarder is much longer than the dorsal one, running almost straight on the LV and with a slight but widespread concavity on RV. The LV is much higher and visibly overlaps the RV. The valves surface is smooth and thin. The inner lamella is well developed in both anterior and posterior, less so ventrally. The tooth plate is adont, the dorsal margin of the RV is fitting into the straight groove of LV. Juveniles in general show a more arcuate dorsal margin and are more pointed posteriorly. Dimension: L = 0,74 – 1,22 mm, H = 0,35 – 0,61 mm, the minimum sizes include juveniles too.

Remarks. This uniquely shaped species can be assigned to Typhlocyprella a subgenus of Candona described by Krstić, (1972). This species differs from other species known from the Pannonian including Candona (Typhlocyprella) applanata Pokorný, 1952 , Candona (Typhlocyprella) lineocypriformis Krstić, 1972 , Candona (Typhlocyprella) elongata Sokać, 1972 and Candona (Typhlocyprella) ankae, Krstić, 1972 . Its prominent subtrapezoidal shape, sharp posterior end and the lack of any pointed anterodorsal extension on LV, as in the case of C. (T.) lineocypriformis , excludes assigning the species accordingly.

Chronostratigraphical and geographical distribution. The species is only poorly preserved and most of the specimens are broken due to their thin, fragile shells. Other species of this genus are known from the Pannonian of the Vienna Basin, Austria and Yugoslavia ( Krstić, 1972; Sokač, 1972).