Animal fossils are often bones that have been turned to rock.  Sometimes part of the flesh is preserved, but most of the time only skeletons remain.  Because of this, it is more difficult to find fossils of invertebrates. (Invertebrates are animals that don’t have bones.)

We have discovered several types of animal fossils, including bones, skin, teeth, claws, eggs, nests, muscles, and organs.

We have also found lots of fossils of footprints, which tell us how much animals and dinosaurs weighed and how they might have walked.

Graphic of frog fossil by Carli