Loxoconchissa (Loxocaspia) aff. reticulata Faranda, Gliozzi and Ligios, 2007

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 : 45

Loxoconchissa (Loxocaspia) aff. reticulata Faranda, Gliozzi and Ligios, 2007

Fig. 31 a-j

2007 Loxoconchissa (Loxocaspia) reticulata nov. sp. - Faranda, Gliozzi and Ligios, p. 317, fig. 8 (1-10).

2019 Loxoconchissa (Loxocaspia) aff. reticulata - Rausch and Stoica, p. 60, fig. 16a-p

Description. The carapace has an oval rhomboidal to elliptical shape in the lateral view. The ventral-and dorsal margin run almost parallel with the ventral margin being arched. The straight running dorsal margin passes smoothly onto the broadly rounded anterior end as well as onto the narrower converging posterior end. The maximum width of the carapace is slightly behind mid-length close to where the eye-spot can be observed in the anterodorsal corner. The anterior area is flattened and in the posterior part a well pronounced tubercle is present that in some cases is covered by ornamentation. The tubercle is occurring in both male and female specimens. Within the posterior area the ornamentation in general becomes less pronounced or in some cases is missing entirely. The rest of the valves surface reticulation follows the margins and forms irregular meshes, longitudinal running rows that are separated by more or less thick prounounced ridges. The inner lamella is well developed and extends along the ventral margin. The hinge is amphidont and consists of a crenulated bar. The posterior tooth is bridgeshaped whereas in the anterior a single tooth is present. Dimension: L = 0,46 – 0,64 mm, H = 0,24 – 0,39 mm, the minimum sizes include juveniles too.

Geographical and chronostratigraphical distribution. Loxoconchissa (Loxocaspia) aff. reticulata was first described from upper Miocene sediments from northern Italy ( Faranda et al., 2007) and from the Pleistocene of the Denizli Basin ( Rausch and Stoica, 2019).

Ecology. The family Loxoconchidae is well known from both brackish fossil taxa as well as living genera ( Faranda et al., 2007).

Figures

Fig. 31a-j Loxoconchissa (Loxocaspia) aff. reticulata; a LV, external view, ♀; b RV, external view, ♀;c, d RV, external view, ♂; e RV, internal view, ♂; f LV, internal view, ♂; g Carapace, dorsal view, ♂; h LV, external view,?A1 juvenile; i RV, external view,?A1 juvenile; j RV, external view, A2 juvenile; k Loxoconchissa (Loxocaspia) aff. reticulata var. rugosa; RV, external view, ♀; (all specimens from section A; a-j samples 0 m – 35,5 m; k samples 18 m)