A new planktonic foraminiferal taxon of the Family Hedbergellidae Loeblich and Tappan 1961 from the Upper Cretaceous (Upper Turonian-Coniacian) of the Caribbean region.

A new planktonic foraminiferal taxon, Hillsella hillsi n. g., n. sp., is described from the upper Turonian-Coniacian sediments of the Caribbean region. The new taxon is included within the Family Hedbergellinae Loeblich and Tappan 1961 and is characterized by a cancellate test wall, which is described for the first time from below the Cretaceous/Tertiary boundary. [ABSTRACT FROM AUTHOR]