https://thesaurus.bcpl.org/thesaurus/history/https://thesaurus.bcpl.org/thesaurus/history/?tema=1010Excavations (Archaeology) https://thesaurus.bcpl.org/thesaurus/history/?tema=1010 Fossils RT https://thesaurus.bcpl.org/thesaurus/history/?tema=1010 Big Bone Lick State Historic Site (Ky.) RT