S1). Previous practical experience has shown that these grains generally generate the youngest dates in samples characterized by blended zircon populations which has proven an effective screening technique for xenocrystic and/or far transported detrital zircon grains153. Trace fossils sort from tracks or other markings of the organism’s movement. Mold fossils https://thesocialvibes.com/story13356602/facts-about-fossil-definition-for-kids-revealed