title: Parryoceras
text: # Parryoceras
  
  Parryoceras is a cyrtogomphoceratid similar to Strandoceras but with broadly expanded siphuncle segments and a nearly straight ventral line. The mature shell is thickened on the inside just behind the aperture resulting in a constriction in the internal mold at the adoral end.
  
  Parryoceras comes from the middle and upper Ordovician of arctic Canada and Norway.
  
  