Vectibalanus unguiformis form. cylindrica
Acorn barnacles (Crustacea, Thoracica, Balanomorpha) from the Eocene and Oligocene of the Isle of Wight and Hampshire (United Kingdom) and Manche, northern France. Acta Geologica Polonica, 71(2) 2021: 153-174. [Zoological Record Volume 157]