Article: The belemnite Acroteuthis in the Hibolites beds (Hauterivian–Barremian) of north-west Europe

Hibolites, a Tethyan-derived genus, was the dominant belemnite in north-west Europe for most of Hauterivian to earliest Barremian (Early Cretaceous) time, while the Boreal genus Acroteuthis continued to thrive in more northerly latitudes. Rare Acroteuthis occur in the Hibolites beds and are easily confused with the slightly younger Aulacoteuthis. Two new Acroteuthis species belonging to the subgenus Boreioteuthis are described here by Pinckney: A. (B). rawsoni and A. (B.) stolleyi.