Landman, Neil H.Kennedy, W. J. (William James)Larson, Neal L.2015-05-042015-05-042015-04-30http://hdl.handle.net/2246/658840 pages : illustrations (1 color), map ; 26 cm.We describe a new species of scaphitid ammonite from the Upper Cretaceous (Lower Maastrichtian) of North America. Hoploscaphites sargklofak, n. sp., is endemic to the U.S. Western Interior, but closely resembles H. constrictus Sowerby, 1817, from the Maastrichtian of northern Europe.en-USHoploscaphites sargklofak.Ammonoidea.West (U.S.)A new species of scaphitid ammonite from the Lower Maastrichtian of the Western Interior of North America, with close affinities to Hoploscaphites constrictus Sowerby, 1817. (American Museum novitates, no. 3833)