Acrocythere aff. pumila Plumhoff, 1963

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 : 13

Acrocythere aff. pumila Plumhoff, 1963

Fig. 9: 13

Material.

3 LV in samples He19-18 and He19-27.

Occurrence.

Upper Aalenian, Bradfordensis Zone (Gigantea Subzone) to Concavum Zone; Germany.

Remark.

In addition to the differentiation from Acrocythere pumila in Plumhoff, 1963, it should be noted that the reticulation between the median rib and the ventral rib in the posterior section is alternating here, whereas it is clearly linear in A. pumila .

Figures

Figure 9. (1) Cytherelloidea lordi Ainsworth, SMNS 70521 / 49, C, right view, L: 0.688 mm; sample He 19 - 19. (2) Bairdiacypris triangularis Ainsworth, SMNS 70521 / 50, C, right view, L: 0.309 mm; sample He 19 - 19. (3) Macrocypris aequabilis Oertli, SMNS 70521 / 51, C, left view, L: 0.349 mm; sample He 19 - 21. (4) Eucytherura cf. parairregularis Brand, SMNS 70521 / 52, C, right view, L: 0.281 mm; sample He 19 - 19; (5) Eucytherura cf. yunga Ballent and Whatley, SMNS 70521 / 53, RV, L: 0.304 mm; sample He 19 - 27. (6) Eucytherura sp. 5 Franz, SMNS 70521 / 54, RV, L: 0.295 mm; sample G 11 Fr; (7) Eucytherura sp. 11 Franz, SMNS 70521 / 55, RV, L: 0.327 mm; sample He 19 - 25. (8) Balowella catena (Franz et al.), SMNS 70521 / 56, RV, L: 0.308 mm; sample He 19 - 24. (9) Praeschuleridea ornata (Bate), SMNS 70521 / 57, RV, L: 0.578 mm; sample He 19 - 21; (10, 11)? Southcavea sp., (10) SMNS 70521 / 58, LV, L: 0.315 mm; (11) SMNS 70521 / 59, RV, L: 0.368 mm; sample He 19 - 24; (12) Pleurocythere kirtonensis Bate, SMNS 70521 / 60, RV, L: 0.597 mm; sample He 19 - 18. (13) Acrocythere aff. pumila Plumhoff, SMNS 70521 / 61, LV, L: 0.406 mm; sample He 19 - 27; (6) Opalinuston Formation, Lower Aalenian, Opalinum Zone, (1 - 5, 7 - 13) Achdorf Formation, Upper Aalenian (1 - 4, 9, 12) Bradfordensis Zone (Gigantea Subzone), (5, 7 - 8, 10 - 11, 13) Concavum Zone. Scale bars (if not indicated otherwise): 20 μm.