Eucytherura sp. 1 Franz et al., 2018

Wannenmacher, Norbert, Dietze, Volker, Franz, Matthias & Schweigert, Guenter, 2021, New records of ostracods and ammonites from the Aalenian (mainly Concavum Zone) of the Zollernalb (Swabian Alb, SW Germany), Zitteliana 95, pp. 1-55 : 8-9

Eucytherura sp. 1 Franz et al., 2018

Fig. 7: 3

Material.

5 RV, 1 LV in samples He19-2-12; 17 C, 1 RV from the Geisingen clay pit; 1 C from the Benken borehole ( Switzerland).

Occurrence.

Lower Aalenian, Opalinum Zone; SW Germany, N Switzerland.

Description.

Very small, subrectangular. Left valve slightly larger than right with dorsal overlap. Anterior margin rounded with extremity slightly below mid-height; posterior margin pointed in right and bluntly rounded in left valve, apex above mid-height. Posterior cardinal angle rounded; anterior cardinal angle pronounced in both valves, slightly more rounded in right valve. Dorsal and ventral margins slightly convex in both valves. Greatest height at anterior cardinal angle; greatest length above mid-height. Shell ornamentation reduced to a regular reticulation with rounded meshes of uniform size. Hemispherical eye-tubercle well developed. Internal details not observed.

Figures

Figure 7. (1) Eucytherura plumhoffi Tesakova, SMNS 70521 / 17, C, left view, L: 0.309 mm; sample He 19 - 7. (2) Eucytherura transversiplicata (Bate and Coleman), SMNS 70521 / 18, LV, L: 0.316 mm; sample He 19 - 3. (3) Eucytherura sp. 1 Franz et al., SMNS 70521 / 19, RV, L: 0.320 mm; sample He 19 - 12. (4) Eucytherura sp. 3 Franz, SMNS 70521 / 20, C, right view, L: 0.300 mm; sample He 19 - 18; (5) Aphelocythere dilgeri Franz et al., SMNS 70521 / 21, RV, L: 0.460 mm; sample He 19 - 18. (6) Aphelocythere pygmaea Plumhoff, SMNS 70521 / 22, C, right view, L: 0.343 mm; sample He 19 - 12; (7)? Aphelocythere sp. 1, SMNS 70423 / 119, C, right view, L: 0.308 mm; sample G 08 Fr; (8)? Pleurocythere sp., SMNS 70521 / 23, LV, L: 0.354 mm; sample He 19 - 1. (9) Acrocythere pumila Plumhoff, SMNS 70521 / 24, LV, L: 0.343 mm; He 19 - 12. (10) Praeschuleridea ventriosa (Fischer in Plumhoff), SMNS 70521 / 25, LV, L: 0.650 mm; sample Mue 19 - 1; (11) Kinkelinella (Kink.) sermoisensis (Apostolescu), SMNS 70521 / 26, LV, L: 0.656 mm; sample He 19 - 9; (12) aff. Ostracode A Ballent, SMNS 70521 / 27, RV, L: 0.290 mm; sample He 19 - 2. (13) Gen. et sp. indet. 3, Franz et al., SMNS 70521 / 28, RV, L: 0.342 mm; sample He 19 - 5; (14) Gen. et sp. indet. 5 Franz et al., SMNS 70521 / 29, RV, L: 0.310 mm; He 19 - 18; (15) Gen. et sp. indet. 8 Franz, SMNS 70521 / 30, RV, L: 0.280 mm; sample He 19 - 12. (16) Gen. et sp. indet. 10, SMNS 70521 / 31, LV, L: 0.300 mm; sample He 19 - 12. (17) Gen. et sp. indet. 11, SMNS 70521 / 32, LV, L: 0.324 mm; sample He 19 - 8. (1 - 3, 6 - 8, 10 - 12, 15 - 17) Opalinuston Formation, Lower Aalenian, Opalinum Zone; (4 - 5, 9, 14) Achdorf Formation, Upper Aalenian, (4 - 5, 14) Bradfordensis Zone (Gigantea Subzone), (9) Concavum Zone. Scale bars (if not indicated otherwise): 20 μm.