title: Atlantidosteus
text: # Atlantidosteus
  
  Atlantidosteus is an extinct genus of homostiid arthrodire from the Early to Middle Devonian of Morocco and Queensland. It contains two known species, A. hollardi and A. pacifica.
  
  ## Description
  
  Atlantidosteus pacifica is known from a right suborbital plate, found in the Broken River Group of Queensland, Australia.
  
  ## Phylogeny
  
  Atlantidosteus is part of the clade Migmatocephala, closer related to Homostius, than Antineosteus.
  
  The cladogram shown here is based on Young, 2003
  
  