Candona ex. gr. neglecta ( Sars, 1887 ), 1845

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 : 15

Candona ex. gr. neglecta ( Sars, 1887)

Fig. 9f-g

1887 Candona neglecta n. sp. - Sars, p. 279, pl. 15, fig. 5-7, pl. 19.

1969 Candona neglecta Sars partim - Diebel & Pietrzeniuk, p.473, pl. 7, fig. 6-8.

1980 Candona neglecta Sars- Freels, p. 94, pl. 16, fig. 12-19.

2000 Candona neglecta Sars- Meisch, p. 77, fig. 26A-C, 27A-B.

2001 Candona neglecta Sars- Tunoğlu & Ünal, p. 176, pl. 3, fi g. 1.

2005 Candona neglecta Sars- Matzke-Karasz & Witt, p. 120, pl. 1, fig. 6-7.

2008 Candona neglecta Sars- Fuhrmann, pl.2, fig. 2a-d. 2012 Candona neglecta Sars- Fuhrmann, p. 32, pl. 10, fig. 1a-f, 2a-d.

2018 Candona ex. gr. neglecta - Jorissen et al., p. 14, fig. 11 (8-9).

Description. The highly variable but usually elongated carapace shows an almost straight dorsal margin that is sloping towards the anterior. The ventral margin is slightly concave. Both the posterior-and the anterior margin are broadly rounded. From the dorsal view, the anterior end is slightly pointed rather than the posterior. The LV overlaps the RV at both ends. This species shows a fine pitted ornamentation pattern in the central area of the valve, leaving out the posterior-and anterior end. Dimension: L = 0,75 – 0,92 mm, H = 0,37 – 0,47 mm, the minimum sizes include juveniles too.

Remarks. The species is only rarely observed in our material and mainly appears in juvenile stages. The general outline resembles the one of C. neglecta , but the valves surface is showcasing some minor ornamentation represented by small pits. We assign the present species to be part of the Candona neglecta group with some uncertainties.

Chronostratigraphical and geographical distribution. The species has a wide stratigraphic range and has been reported from Serravallian to Recent ( Medici et al., 2011). It is further known from the early Pannonian and Pontian of the Gelibolu Peninsula (NW Turkey; Tunoğlu and Ünal, 2001) as well as from Pleistocene deposits of the Burdur Basin (Suludereköy and Kuruçayköy Fm.) in SW Anatolia ( Freels, 1980). Other occurrences include Pliocene – early Pleistocene deposits from Central Italy (Valle Orsa Fm.; Spadi et al., 2018) and deposits from the Slănicul de Buzău section (Dacian - Romanian stage) in the Dacian Basin (Van Baak et al., 2015; Jorissen et al., 2018), upper Miocene freshwater strata from Turiec Basin (Slovakia; Pipík and Bodergat, 2007) and the upper Pontian of the Dacian Basin ( Ter Borgh et al., 2014).

Ecology. C neglecta occurs in a wide range of aquatic habitats and prefers slightly cold water but can also tolerate temporary increase in temperature beyond 20°C. It has been reported from coastal-and inland waters with a salinity range of 0,5 - 16‰ ( Meisch, 2000). In lakes it has been observed from the shallow littoral zone down to depths of 311m (Lago Maggiore, Italy; Meisch, 2000). Together with C. ex. gr. torosa and I. gibba (Ramdohr) it has been described as freshwater assemblages from the Romanian stage of the Slanicul de Bazau section in the Dacian Basin (Van Baak et al., 2015).