Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 62. (Budapest 1970)

Nagy, I. Z.: Lower Liassic molluscs from the Mts. Mecsek, Hungary

Modiola aff. lusitanien J. BÖHM Pl. II, Fig. 6. Examined material: Molds of three specimens, partially with shell, in greyishblack coal shale. Mecseknádasd, shale dump M 69.349. Remarks: The shells are wide and short, resembling the above species from Pereiros. Outline rhomboid, slightly longer than high; the edge of the keel is deflected, forming a small ala. Modiola aff. lioffmaiini (NILSSON) Examined material: Impressions of specimens, partially witli shells, in greyishblack coal shale. Zobák, M 69.343. Remarks: The specimens differ from both the typical and the Portuguese (Anadia, Pereiros) exemplars by their slightly elongated, higher form. Superfam.: Unionacea; Fam.: Cnrdiniidac ZXTTEL, 1881; Genus: Trigouodus SANDBEBGEB, 1864. Trigouodus vizeri VADÁSZ Pl. II, Figs. 8-10. 1862 Cardinia unhides (Au.). — PETERS, Lias Fünfkirchen, p. 17. Examined material: Molds, partially with shells; half shells. Vasas, Victoria shaft (M 69.339); Pécsbányatelep, Cassian shaft (M 69.359); Hosszúhetény, mine II (M 69.340; M 69.360); Pécs (M 62.5847; M 57.3712); Komló, Kossuth shaft, cover of bed 17 (M 69.345); Mecsekszabolcs, cover of bed 17 (M 69.353). Remarks: One of the most frequent species of the Liassic in the Mts. Mecsek, being identical with PETERS'S above species. Its relationship with Unio had already been pointed out also by WÖHRMANN and WAAGEN. Owing to its maritime origin, VADÁSZ relegates it to the genus Trigouodus. Its quadratic shape resembles Tr. rablensis GREDL, and to some degree also Tr. bittneri WAAGEN. However, these are rather more rhomboid, with a more projecting apex and a keel decurrent posteriorad from the apex, absent in Tr. vizeri. Cardinia unioides AG. displays a similar form, but it is as yet unknown from the Liassic at Pécs. Fam.: Cardiniidae ZITTEL, 1881; Genus: Cardinia AGASSIZ, 1841. Cardinia listeri (SOWERBY) 1824 Unio listeri SOWERBY — Mineral Conchol., PI. 155, Figs. 1-3; hybrida, i.e., PI. 154, Fig. 4. Examined material: An open shell from coal shale, Pécs, Thommen shaft. 33 mm long, 21 nun high. M 69.346. Remarks: The species is easily identifiable by its characteristic habit and robust developmental line. Our specimen is most similar to those described by WAAGEN (1907). CHERNYSHOFF (1937) published a squat, rounded species under the name