Amnicythere sp. 3

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 : 35

Amnicythere sp. 3

Fig. 23 a-h

Description. This species is characterised by a small sized carapace (less than 0,5 mm) and an ornated, quite regular appearing polygonal ornamentation network. The maximum height is located in the anterior half, close to the cardinal angle. The dorsal margin runs straight and is passing onto the rounded anterior end at an obtuse angle. The posterior-and the anterior boarders pass smoothly onto the medially concave ventral margin. The valves surface is covered with medium-sized meshes of almost equal size. Occasionally, inside the main polygons a secondary net structure occurs. Close to the mid-dorsal area an ornamentation net structure radiates and forms one or two irregular subcentral tubercula. The inner lamella is well developed anterior and posterior, and along the ventral margin. A snap-pit is present on the concavity on the internal part of the RV. The hinge on the RV is made of a smooth median bar and elongated, divided teeth at the ends. Dimension: L = 0,40 – 0,52 mm, H = 0,22 – 0,27 mm, the minimum sizes include juveniles too.

Figures

Fig. 23a-h Amnicythere sp.3; a LV, external view, ♂; b, d, e LV, external view, ♀; c, f RV, external view, ♀; g LV, internal view, ♀; h RV, internal view, ♂; i-o Amnicythere sp. 4; i. LV, external view, ♂; j RV, external view, ♂; k LV, external view, ♀; l RV, external view, ♀; m RV, internal view, ♂; n LV, external view, A1 juvenile; o RV, external view, A1 juvenile; (all specimens from section A, samples 0 m – 35,5 m).