Hemihoplites is an extinct genus of ammonoid cephalopods belonging to the family Hemihoplitidae. with and (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, pp. 228, 231. These fast-moving nektonic carnivores lived in the Cretaceous period, from the Hauterivian age to the Barremian age.Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda
Description
It is evolute, compressed. The Whorl section is rectangular. The ribs are simple or branching or long or short, well spaced, straight or slightly flexuous, crossing flat venter transversely, typically with distinct umbilical and ventrolateral tubercles.
Species
Hemihoplites feraudianus (d'Orbigny, 1841) Hemihoplites mexicanus Imlay, 1940 Hemihoplites ploszkiewiczi Riccardi and Aguirre Urreta, 1989 Hemihoplites soulieri (Matheron, 1878) Hemihoplites varicostatus Riccardi and Aguirre Urreta, 1989
Distribution Fossils of species within this genus have been found in the Cretaceous rocks of Antarctida (Alexander Island), Bulgaria, southeastern France, Mexico, Slovakia, South Africa and Trinidad and Tobago.
References
External links