Tiny 400-Million-Year-Old Fossilized Fish Skull Holds A Surprising Secret To How We Evolved
measure a tiny 2 cm ( 0.8 in ) in duration , two 400 - million - yr - old fossilized fish skull are providing a bragging clue into the evolutionary tree and our origins , according to new inquiry publish ineLIFE Sciences . Found more than two decades apart in Australia , theLigualelepisskulls were preserved in three - attribute , allowing for investigator to scan and assemble together their bone social organization ....