cephalaspid
1. [ noun ] (zoology) extinct jawless fish of the Devonian with armored head
Synonyms: osteostracan
Related terms: jawless_vertebrate Osteostraci
Similar spelling:   Cephalaspida
  cephalic
  cephalosporin
  cephalexin
  cephalic_index
  Cevallos
  Ceballos
  cephalic_vein