Acta Palaeontologica Polonica

Middle Lias miliolids from western Pomerania Poland

Iwona Rek

Acta Palaeontologica Polonica 26 (3-4), 1981: 339-363

Six species of Ophthalmidium and Cornuloculina, including 3 new ones (C. plana sp.n., C. polonka sp.n., and C. pazdroe sp.n.) are described from the Middle Lias of NW Poland. The species were differentiated taking into account biometric data: length and width of test, length-to-width ratio, length and number of chambers, and size of proloculus. Ophthalmidium concentricum (Terquem and Berthelin) is considered to be more shallow-water in requirements than Cornuloculina orbiculare (Burbach).

Key words: Foraminiferida, Miliolidae, Ophthalmidiinae, taxonomy, Middle Lias, Poland.

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