'High levels of this metal, at. #77, in rocks near dinosaur fossils led to the asteroid theory of their demise'
iridium
DINOSAURS: High levels of this metal, at. #77, in rocks near dinosaur fossils led to the asteroid theory of their demise
High levels of this metal, at. #77, in rocks near dinosaur fossils led to the asteroid theory of their demise
High levels of this metal, at. #77, in rocks near dinosaur fossils led to the asteroid theory of their demise
DINOSAURS
iridium
DINOSAURS