Scaphites hippocrepis (DEKAY) IV, a new chronological subspecies from the Lower – Upper Campanian (Upper Cretaceous) boundary interval of northern Spain

Abstract

A fourth chronological subspecies of Scaphites hippocrepis (DEKAY), called S. hippocrepis IV, is described from the highest Lower Campanian and lower Upper Campanian of Navarra, northern Spain. It is the stratigraphically highest representative of the hippocrepis lineage, characterized by strong conical to massive umbilical tubercles, which number three to five in microconchs and five in macroconchs.