Elements reveal fossils' origins.
Dalton
Rex
R
D005580:Fossils; D005618:Fresh Water / Q000737:chemistry; D005843:Geography; D028581:Lanthanoid Series Elements / Q000032:analysis*; D013800:Theft / Q000331:legislation & jurisprudence* / Q000517:prevention & control*; D014481:United States
D028581:Lanthanoid Series Elements