Acta Palaeontologica Polonica

Redescription of a Danian oyster Pycnodonte simile (Pusch, 1837) from Poland

Marcin Machalski

Acta Palaeontologica Polonica 33 (1), 1988: 73-83

Pycnodonte simile (Pusch, 1837) is revised and redescribed on the basis of a new material from the type horizon and area, i.e., Danian deposits of Puławy region, Middle Vistula Valley, Central Poland. Neotype of the species is designated. Variability and relations of Pycnodonte simile to other pycnodont oysters, especially to Pycondonte vesiculare (Lamarck, 1806), are considered.

Key words: oysters, taxonomy, shell structure, Tertiary, Danian, Central Poland.

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