Anisoceratidae Hyatt, 1900
Key morphological features: Shell is loosely coiled with several striaght sections. There are usually some ribs and bumps across the shell. Suture lines are simple.
MOBILITY: Mobile (swim)
FEEDING MODE: Predator
Wright, C. W., 1996. Ammonoidea, in Kaesler, R. L., ed., Treatise on Invertebrate Paleontology, Part L, Mollusca 4, Volume 4. The University of Kansas and Geological Society of America. 362 pp.