title: Occithrissops
text: # Occithrissops
  
  Occithrissops is an extinct genus of prehistoric ray-finned fish of the Jurassic, described from Sundance Formation. The genus name of Occithrissops refers to the occidental occurrence of the genus and its relationship to Thrissops.
  
  ## Description
  
  Occithrissops reached length about 20 centimetres (7.9 in). Although it is placed within Ichthyodectiformes, it have some different characters compared to other Jurassic ichthyodectiform Thrissops and Allothrissops, and original description described this taxon as Ichthyodectiformes incertae sedis. Later study considered this taxon is basal ichthyodectiform, and shared some morphological similarities with Jinjuichthys.
  
  