Palaeontology: time traps.
Dalton
Rex
R
D000818:Animals; D003120:Colorado; D025061:Dinosaurs / Q000502:physiology*; D053476:Extinction, Biological; D005580:Fossils; D019015:Geologic Sediments / Q000737:chemistry; D008280:Magnetics; D018543:Minor Planets; D010163:Paleontology / Q000379:methods*; D010944:Plants; D013997:Time Factors; D014329:Tropical Climate