Psilochara polita ( Reid & Groves, 1921 )

Trabelsi, Khaled, Sames, Benjamin, Wagreich, Michael, K ́ azm ́, Miklos, , Andrea Mindszen & Mart ́ ın-Clo, d Carles, 2021, A new diverse charophyte flora and biozonation of the Eocene bauxite cover-sequence at G ant (V ertes Hills, Hungary), Journal of Systematic Palaeontology 19 (7), pp. 541-563 : 551-552

Psilochara polita ( Reid & Groves, 1921) Grambast, 1959

( Fig. 11A–F)

1921 Chara polita sp. nov. Reid & Groves: 187, pl. 5, figs 9, 12.

1927 Gyrogona politus Pia : 90.

1958 Ovochara polita comb. nov. Grambast: 167.

1959 Peckichara polita Horn af Rantzien: 116, pl. 13, figs 1–3.

1959 Psilochara polita Grambast : 11.

1977b Psilochara polita Feist-Castel : 153.

1986 Psilochara polita Riveline : 59, pl. 22, figs 8–12.

Material. Fifty-eight gyrogonites in sample G-6a. Collection numbers of figured specimens: HNHM-PBO 1564–1569.

Description. Medium-sized gyrogonites (550–700 M m in height 500–650 and M m in width) with ovoidal shape ( ISI 100–120) and laterally showing 7–10 convolutions ( Fig. 11A–C; Fig. 12). Apex round to pointed ( Fig. 11A–C). Base tapering to prolonged into a stout basal column ( Fig. 11A–C) and showing a small pentagonal basal pore ( Fig. 11F). Spiral cells smooth, concave or flat and separated by protruding narrow to weakly undulated intercellular ridges.

Distribution. Psilochara polita is described here from the middle Eocene of Hungary for the first time. It has previously been described from the upper Bartonian of the Isle of Wight, England ( Reid & Groves 1921; Feist-Castel 1977b; Riveline 1986) and of the Paris Basin ( Grambast 1958; Riveline 1986).