title: Graphoceratidae
text: # Graphoceratidae
  
  Graphoceratidae is an extinct family of ammonites in the order Ammonitida, which lived during the Jurassic.
  
  ## Distribution
  
  Fossils are found in the Jurassic marine strata of Canada, France, Germany, Hungary, Italy, Morocco, Saudi Arabia, Spain and the United Kingdom.
  
  ## Genera
  
  Subfamily Graphoceratinae Buckman, 1905
  
  * Brasilia
  * Graphoceras
  * Hyperlioceras
  * Ludwigia
  
  Subfamily Leioceratinae Spath, 1936
  
  * Canavarella
  * Costileioceras
  * Vaceckia
  * Leioceras
  * Staufenia
  * Ancolioceras
  
  Subfamily Dumortieriinae Haug, 1885
  
  * Dumortieria
  * Pleydellia
  * Catulloceras
  * Cotteswoldia
  * Walkericeras
  * Canavarina
  * Paradumortieria
  
  Subfamily Tmetoceratinae Spath, 1936
  
  * Tmetoceras
  