Richards 1962. New Cretaceous invertebrate fossils from test borings in New Jersey. Richards, H. G."The Cretaceous fossils of New Jersey"., "The Cretaceous fossils of New Jersey". Bull. N.J. Div. Geol. 61 (2) : 199-207 3 pls.", 1962: 199-207. Chapter pagination: 199-207