Brosius E Treatise on Invertebrate Paleontology, Part L Mollusca - 4 Volume 4 : Cretaceous Ammonoidea .-Revised .-0-8137-3112-7 - Revised - Geological Society of America and The University of Kansas, USA, Kansas 1996 ISBN: 0-8137-3112-7 Dewey Class. No.: H6:(K1) N96.4/B28167