palaeo-       
prefix  science UK specialized (US paleo-) uk/pæl.i.əʊ-/ us/peɪ.li.oʊ-/
 古,原始,早期,史前
ancient; from a time before history was being recorded
  palaeobotany 古植物学 
 a palaeontologist
 - More examples
 - The figures are based on palaeoclimate data.
 - palaeontological sites on the African continent
 - the middle of the palaeolithic period