The Berriasian — lower Valanginian genus Leptoceras reappears in the lower Barremian sequences of Rumania, where it is represented by at least two species: L. brunneriforme sp. nov. and L. svinitense sp. nov. This record has led to a revision of the so far accepted taxonomic interpretation of the criomorph Barremian Leptoceratoidinae and of their relationship with the Berriasian-Valanginian Protancyloceratinae. In addition, a new species of the genus Hamulinites (H. nicklesi, from the uppermost Hauterivian) provides evidence that the genus Eoleptoceras Manolov should be considered valid.

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Keywords Ammonoidea, Leptoceratoidinae, new species, taxonomy, Hauterivian, Barremian
Journal Scripta Geologica. Special Issue
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Citation
Avram, E. (1999). Some new species of the subfamily ‘Leptoceratoidinae’ (Ancyloceratina, Ammonoidea) in uppermost Hauterivian and lower Barremian deposits from Rumania. Scripta Geologica. Special Issue, 3, 31–43.