What is "yezoites"

Yezoites is an extinct genus of ammonoid cephalopods from the Upper Cretaceous that has been assigned to the Scaphitidae of the Ancyloceratida.

Yezoites was first discovered in the Upper Cretaceous Yezo Group, Hokkaido, Japan and has since been identified in Antarctica, Denmark, France, Madagascar, and the United States.

Placement in the Scaphitidae is doubtful. The shell has wide spaced ribbing.