A new heteromorph ammonite from the Barremian (Cretaceous) of California

A new genus and species of heteroceratid ammonite from the Barremian of California has been identified. The type specimens are differentiated from other known members of Heteroceratidae by the rate of whorl expansion of the conch cross-section, the orientation of the spire axis with respect to the planispiral portion of the conch axis and ornamentation.