†Kossmatella (Murphyella) Matsumoto

Matsumoto. A new gaudryceratine ammonite from the Cenomanian of Hokkaido (Studies of the Cretaceous ammonites from Hokkaido and Saghalien - 25). Memoirs Fac Sci Kyushu Univ (Geol), 21(2) 1972: 207-215