Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 24-25. 2007. (Budapest, 2007)

MEZNERICS 1943; BlTNER & Dl'LAI 2004); Romania (BOETTCJER 1901; ZILCH 1934; MEZNERICS 1943; BÄRBULESCU & RADO 1984; BlTNER & DULAI 2004); Bulgaria (BlTNER 1993); France (DEMORGAN 1915; JULIEN 1940); Pliocene: Italy (DAVIDSON 1870); Spain (ENCINAS & MARTIN ELL 1992); Recent: Mediterranean Sea (DAVIDSON 1870; LOGAN 1979, 2003; LOGAN & NOBLE 1983; BRUNTON 1988); Atlantic Ocean (LOGAN 1983,1988,1993). Figure 4 — Argyrotheca cordata (RlSSO, 1826), Bánd and Devecser. — 1: Dorsal view of a complete specimen (I.: 2.2 mm; W: 2.3 mm), x22, Bánd; 2: Dorsal view of a complete specimen (L: 2.8 mm; W: 2.7 mm), xl8.5, Bánd; 3: Ventral view of a complete specimen (L: 2.3 mm; W: 2.6 mm), x20, Bánd; 4: Vent/al view of a complete specimen (L: 3.1 mm; W: 2.8 mm), xl7.5, Bánd; 5: Inner view of a dorsal valve (L: 1.9 mm; W: 2.5 mm), x22.5, Bánd; 6: Outer view of a dorsal valve (L: 2.1 mm; W: 2.3 mm), x20, Devecser; 7: Inner view of a dorsal valve (L: 2.0 mm; W: 2.5 mm), x22.5, Devecser; 8: Detail of Figure 4: 7; showing the median septum; x75, Devecser; 9: Detail of Figure 4: 7; showing oblique-lateral view of the median septum; x56, Devecser. Taxonomic composition of the fauna The brachiopod assemblage of Bánd locality is of low diversity and contains only two species of Argyrotheca, A. cordata (65%) and A. cuneata (35%). As the specimen number of this sample is relatively high (422), these data probably represent more or less the real composition of the original assemblage. The Devecser sample is slightly different, it contains Megathiris detruncata (60%) and Argyrotheca cordata (40%), but the low number of specimens (5) may give false percentages. The taxonomic composition of the Bánd fauna is not exceptional in the Middle Miocene. Argyrotheca is often the dominant element of the brachiopod assemblages in the Central Paratethys. Two Argyrotheca species are present with a strong dominance of A. cordata at Lychów, Roztocze