reptilian age

1 definition found

reptilian age - Collaborative International Dictionary of English v.0.48 :

  Reptilian \Rep*til"i*an\ (-an), a.
     Belonging to the reptiles.
     [1913 Webster]
  
     Reptilian age (Geol.), that part of geological time
        comprising the Triassic, Jurassic, and Cretaceous periods,
        and distinguished as that era in which the class of
        reptiles attained its highest expansion; -- called also
        the Secondary or Mezozoic age.
        [1913 Webster]