Crossword Puzzle PREHISTORY CROSSWORDOnline version MATCH THE DEFINITIONS WITH THE WORDS HIDDEN by Sandra Gómez 1 Period known mainly through archaeological discoveries 2 one of many reptiles that lived on Earth millions of years ago 3 a weapon with a pointed tip 4 a weapon with a long, sharp metal blade and a handle 5 a natural passage into the earth 6 The light and heat and especially the flame produced by burning 4 3 5 6