Acanthoceratidae Grossouvre, 1894
Key morphological features: Strongly ribbed shell with prominent bumps along surface. Evolute with no changes in shell shape with organism size. Sutures mostly simple in design. This family underwent a rapid burst of radiation during the Cenomanian (100-93 million years ago).
MOBILITY: Mobile (swim)
FEEDING MODE: Predator
Duration: Lower Cenomanian to Coniacian (Source: Wright et al., 1996).
PaleoDB taxon number: 95294.
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.