When scientists go looking for fossils, they investigate areas where the sedimentary rock is between 65 and 230 million years old.
(scientists; go looking; for fossils) (they; investigate; areas where the sedimentary rock is between 65 and 230 million years old; T:When scientists go looking for fossils) (the sedimentary rock; is; between 65 and 230 million years old; L:areas)
scientists they the sedimentary rock
go looking investigate is
for fossils
areas where the sedimentary rock is between 65 and 230 million years old T:When scientists go looking for fossils
between 65 and 230 million years old L:areas