Oryctos
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Accès privé :
| volume 4, 2002 |
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Dorin Sorin Baciu & Bruno Chanet, Fossil flatfishes (Teleostei: Pleuronectiformes) from the Oligocene of Piatra Neamt (Romania). Oryctos 4, 17-38.
The aims of this paper are: I) to report the presence of fossil pleuronectiformes in the Middle Oligocene of Piatra Neamt (Romania), ii) to specify their systematic position, iii) to present data they can bring about the phylogeny of flatfishes. Two species have been recognised: Scophtalmus stamatini (Paucã, 1931) and Oligobothus pristinus n. g. n. sp. The present study provides new arguments to assess that the first species is the oldest known scophthalmid and then the first record of a fossil member of this flatfish family. As the latter possesses myorhabdoi, some peculiar intermuscular bones only present in bothids, Oligobothus pristinus n. g. n. sp. is the oldest known member of the family Bothidae. These results suggest that the dichotomies between the Bothidae, the Scophthalmidae and the remaining Pleuronectiformes occurred before Middle Oligocene.
Keywords: Teleosteans, Pleuronectiformes, Bothidae, Scophthalmidae, Oligocene, Piatra Neamt, Romania
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