New records of ostracods and ammonites from the Aalenian (mainly Concavum Zone) of the Zollernalb (Swabian Alb, SW Germany) Author Wannenmacher, Norbert Meraner Str. 61, 86720 Noerdlingen, Germany Author Dietze, Volker https://orcid.org/0000-0001-5927-5162 Meraner Str. 61, 86720 Noerdlingen, Germany dietze.v@t-online.de Author Franz, Matthias Regierungspraesidium Freiburg, Landesamt fuer Geologie, Rohstoffe und Bergbau, Albertstr. 5, 79104 Freiburg i. Br. Germany Author Schweigert, Guenter Staatliches Museum fuer Naturkunde, Rosenstein 1, 70191 Stuttgart, Germany text Zitteliana 2021 2021-06-17 95 1 55 http://dx.doi.org/10.3897/zitteliana.95.56296 journal article http://dx.doi.org/10.3897/zitteliana.95.56296 2747-8106-95-1 F894DD92D76C42E1A4A2852E4D2ADD48 6D901F870E7952C39D59521A71631153 Eucytherura foveolata sp. nov. Fig. 6: 12-14 Eucytherura sp. 4. - 2018 Franz et al., p. 72, plate 3: 22 Etymology. From fovea (lat.) = pit; referring to the characteristic pits on the lateral surface. Holotype. One carapace, figured in Fig. 6 : 12, SMNS 70521/12. Paratypes. Two carapaces, figured in Fig. 6 : 13, 14, SMNS 70521/13-14. Type locality. Drillcore KB 1/93 Geisingen (SW Germany). Type horizon. Opalinuston Formation, Zillhausen Subformation, sample G08Fr, Lower Aalenian. Material. 19 C, 2 RV, 2 LV from samples He 19-3-12 and from the Geisingen clay pit. Diagnosis. A small-sized species of the genus Eucytherura with the following characteristics: pitted lateral surface with a fine median rib. 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. Dorsal margin straight in left, slightly convex in right valve; ventral margin straight or slightly concave. Greatest height at anterior cardinal angle; greatest length above mid-height. Ornament consists of a fine median, horizontal or subdiagonal rib, accompanied on both sides by shallow, about 15 μm wide, round or subangular pits with a rough surface. A third row of such pits running antero-medianly - postero-ventrally; further pits in variable numbers and positions scattered on the lateral surface. Particularly striking are 4 rhomboidally grouped pits (Fig. 6 : 12) in the mid-dorsal area. Eye-tubercle only weakly developed. Internal details not observed. Comparisons. All other previously known species of Eucytherura have a well-developed ornamentation with sharp or broad ribs and/or reticulate surfaces. Occurrence. Lower Aalenian, Opalinum Zone; SW Germany.