Reconstruction of Oligocene and Neogene freshwater fish faunas-an actualistic study on cypriniform otoliths Author Schulz-Mirbach, Tanja Author Reichenbacher, Bettina text Acta Palaeontologica Polonica 2006 51 2 283 304 journal article 10.5281/zenodo.13643922 1732-2421 13643922 Leuciscus souffia Risso, 1826 Fig. 15L–O . Material and dimensions .—See Table 2 . Description .—The general shape of the four investigated Leuciscus species is ovate to rectangular with a steeply dropping posterior margin. The regular shape is generated by the medial and lateral margins that run bilaterally symmetrical to each other and by the vertical posterior margin. In all species, the edges are generally well developed. Remarks .—The lapilli of L. idus differ from the three other Leuciscus species because of their pointed, strongly marked anterolateral edge, whereas the anteromedial edge is only weakly developed.