Another thing that has been worrying me for many years. So today my kind boss brought in her son's Dinosaur Book of Facts for me to study. I love books like this: simple text; lots of pictures; no messing around.
A fossil can be:
the bones of an animal;
a cast of an animal's body in some rock;
a cast filled with sedimentary rock;
a footprint;
a nest or pooh.
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