New data on ammonoids of the genus <Emphasis Type="Italic">Paraulacosphinctes</Emphasis> from the Upper Tithonian of the Mountainous Crimea

The Late Tithonian ammonites Paraulacosphinctes cf. transitorius (Oppel) and P. cf. senoides Tavera from the Feodosiya section boundary Tithonian-Berriasian beds of the Crimea are described. These species allow the correlation of the beds with P. cf. transitorius recognized in the Crimea with the Upper Tithonian Substage of the Western European scale. Based on magnetostratigraphic data, these beds supposedly correlate with the Durangites Zone.