title: Psiloceratidae
text: # Psiloceratidae
  
  Psiloceratidae is an extinct family of cephalopods belonging to the ammonite subclass.
  
  ## Description
  
  The Psiloceratidae are evolute, smooth or with blunt primary ribbing. The venter is rounded and generally smooth, in some feebly keeled. Sutures are simple with phylloid saddle endings in some. The aptychus is single, found in sutu in Psiloceras
  
  ## Genera
  
  * Badouxia Guex and Taylor, 1976
  * Caloceras
  * Discamphiceras
  * Euphyllites Wahner, 1898
  * Franziceras Buckman, 1923
  * Kammerkaroceras
  * Laqueoceras
  * Murihikuites Stevens, 2004
  * Paradiscamphiceras Taylor, 1988
  * Paraphylloceras Salfeld, 1919
  * Psiloceras
  * Psilophyllites
  
  ## Distribution
  
  Fossils of species within this genus have been found in the Triassic rocks of Canada, in the Jurassic rocks of Argentina, Austria, Canada, China, France, Germany, Hungary, Mexico, New Zealand, Spain), United Kingdom, United States, as well as in the Cretaceous of Australia and Russia.
  
  