Revision of the family Propercarinidae (Perciformes, Stromateoidei) with description of a new species from the Oligocene of the Carpathians

The monotypic fish family Propercarinidae (Perciformes, Stromateoidei) was found in the Paratethys area only; it is represented by the genus Propercarina Paucă, 1929, whose two species were originally described from the Oligocene deposits of Romania. The material of these species was revised, and new Oligocene specimens from the Polish and Romanian Carpathians allowed the description of a new species, P. problematica sp. nov. The morphology of Propercarinidae was compared with that of extant stromateoids revealing a mixture of primitive and relatively advanced features in the family Propercarinidae.