Template:Wright et al., 1996
- Wright, C.W., Callomon, J.H. & Howarth, M.K. 1996. Treatise on Invertebrate Paleontology, Part L, Mollusca 4 (Revised) vol. 4: Cretaceous Ammonoidea. Geological Society of America, Boulder, CO; 362 pp. DOI: 10.17161/dt.v0i0.5285 Full text.