Fir the first time, researchers document the use of a stone with dinosaur tracks in an Ancestral Puebloan building in Utah. The research was presented at the recent Geological Society of America meeting, but you can read about it here.
Fir the first time, researchers document the use of a stone with dinosaur tracks in an Ancestral Puebloan building in Utah. The research was presented at the recent Geological Society of America meeting, but you can read about it here.