Yes! Sedimentary rock is the best place to look for dinosaur fossils.
Many fossils came from dinosaurs that were covered by sediment soon after they
died. The soft parts of a dinosaur (such as skin and organs) quickly rotted,
but hard parts (such as teeth and bones) remained. As sediment continued to
settle on top and turn to rock, water moving through the rock slowly replaced
the chemicals in the bones with hard minerals, creating fossils.
OK, so you need to look for sedimentary rock. But sedimentary rock has been
around for millions and millions of years. You need to find the sedimentary
rock that formed during the time the dinosaurs lived.
Dinosaurs roamed the Earth between 250 million years ago and 65 million years
ago. Geologists divide the Earth's history into sections called eras. Click on
the era that spans the time when dinosaurs lived.