Liparoceras is an extinct fossil ammonite species from the Early Jurassic period of England, and is found in lower Lias deposits. Its name means 'fat head' and this is due to its broad shell. The venter is wide and finely ribbed with no keel and it has two rows of tubercules on each whorl. Distribution Jurassic deposits of Argentina, Europe, British Columbia and North Africa. References Arkell et al., 1957. Mesozoic Ammonoidea, in Treatise on Invertebrate Paleontology, (Part L); Geological Soc. of America and University of Kansas press. External links Liparoceras at fossilmuseum.net Liparoceras at the Whitby Museum Ammonitida genera Liparoceratidae Jurassic ammonites Fossils of Great Britain Pliensbachian life