Chara media Grambast, 1958

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 : 553-554

Chara media Grambast, 1958

( Fig. 14A–I)

1958 Chara media Grambast : 178, fig. 81b.

1986 Chara media Riveline : 68, pl. 29, figs 6–12.

Material. Up to 80 gyrogonites in both samples G-2.5 and G-6a. Collection numbers of figured specimens: HNHM-PBO 1577–1585.

Description. Gyrogonites of medium size (400–650 M m high and 300–500 M m wide), ellipsoidal sub-prolate ( ISI 110–145), laterally showing 8–11 (usually 9–10) convolutions ( Figs 14A–G, 15). Maximum width nearly at the half to two-thirds of height. Apex rounded to slightly conical, with distinctly widening of the spiral cell endings ( Fig. 14H). Spiral cells concave, smooth and without any periapical modification. Base tapering showing a superficial pentagonal basal pore ( Fig. 14I).

Distribution. Chara media is described here from the upper Eocene (upper Bartonian) of Hungary for the first time. Grambast (1958) and Riveline (1986) documented this species from the upper Bartonian–lower Oligocene of several basins in France, Belgium and Germany.