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Les Lepidotes (Actinopterygii, Semionotiformes) du Crétacé inférieur (Barrémien) de Las Hoyas (Province de Cuenca, Espagne)

Sylvie WENZ

fr Geodiversitas 25 (3) - Pages 481-499

Published on 26 September 2003

Lepidotes fishes (Actinopterygii, Semionotiformes) from the Lower Cretaceous (Barremian) of Las Hoyas (Cuenca Province, Spain).

Two new Lepidotes Agassiz, 1832 species are described from the Early Cretaceous (Barremian) lacustrine beds from Las Hoyas (Cuenca Province, Spain). Lepidotes microrhis n. sp. and Lepidotes tanyrhis n. sp. are represented by articulated specimens. They are defined by the coexistence of characters either unknown in Lepidotes (infraorbitals at the posteroventral corner of the orbit posteriorly extended, reaching the preoperculum only in L. microrhis n. sp.), exceptional (extrascapular commissure passing through the parietal, two suborbitals, edentulous maxillary) or variously distributed (lack of tritoral teeth, unpaired vomer). Lepidotes is frequent at Las Hoyas. It differs from the rare specimens described at Montsec (Province of Lérida, Spain), a usually Berriasian-Valanginian locality that presents numerous elements in common with Las Hoyas.

Keywords :

Pisces, Actinopterygii, Semionotiformes, Lower Cretaceous, Spain, new species

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