Cardioceras densiplicatum FACT FILE
Cardioceras is an ammonite genus with a moderately compressed shell, with a large outer whorl that becomes smooth. It has a strong keel and well differentiated ribs.
Fast-moving nektonic carnivores
The microconch were relatively large, with an average phragmocone diameter about 5-7 cm, macroconchs had a diameter of 20-25 cm. Microconchs of Cardioceras genus had no lateral projections on their apertures, however they had long ventral projection (rostrum).