Alburnoides bipunctatus ( Bloch, 1782 )

Schulz-Mirbach, Tanja & Reichenbacher, Bettina, 2006, Reconstruction of Oligocene and Neogene freshwater fish faunas-an actualistic study on cypriniform otoliths, Acta Palaeontologica Polonica 51 (2), pp. 283-304 : 290

Alburnoides bipunctatus ( Bloch, 1782)

Fig. 6 .

Material and dimensions.—See Table 2.

Description.—The general shape resembles a trapezium. All edges are strongly accentuated except the anterolateral edge, which is small and rounded. The anteromedial edge is extended robustly in some specimens ( Fig. 6D, E ). The medial margin is straight to slightly concave and runs somewhat oblique or parallel to the length of the lapillus. The posterior margin is concave, and the lateral margin is rounded.

Figures

Fig. 6. Utricular otoliths (lapilli) of Recent Alburnoides bipunctatus (Bloch, 1782) from wild catches in Germany. A. BSPG 2003 IV 15b in dorsal (A1, represented as right lapillus, mirrored) and anterior (A2, represented as left lapillus) views. B. BSPG 2003 IV 15a in ventral view represented as left lapillus (mirrored). C–E. BSPG 2003 IV 13, 17, and 16 respectively, in dorsal views, represented as right lapilli (mirrored). A, B display a lapilli pair. SEM−pictures (A, B), digital photographs (C–E).