The cretaceous was a geological period that lasted from 145 to 66 million years ago with the dinosaurs still roaming the earth at the time. From the early cretaceous period, the terrestrial sedimentary system of earth preserved charcoal in
The cretaceous was a geological period that lasted from 145 to 66 million years ago with the dinosaurs still roaming the earth at the time. From the early cretaceous period, the terrestrial sedimentary system of earth preserved charcoal in