The History of the Earth: Supplemental Guide 7A | Fossils 135- [Show Image Cards 10 (Trilobite), 12 (Fish Fossils), 13 (Fern
Fossil) and name them.] These are all fossils that have been
found. Can you guess how long ago these things lived? (a
long, long time ago!)
Purpose for Listening
Tell students to listen carefully to fi nd out how paleontologists
learn about plants and animals that lived on the earth many years
ago.