1. Chapter 15 1)Discuss objective, bellwork, and ask about birthdays!!! 2) View and discuss fossil notes 3) Do review activity at the work stations and share -take your books with you to the work stations! 4) (Time permitting) Examine fossils! 6) COPY INTO YOUR AGENDA No homework Oct 25, 2012 Plan 2 SPI 0807.5.5 Fossils Silly Thought Four out of every three people… …have trouble with fractions

2. Chapter 15 Sedimentary rock and fossils: deeper layers are older than layers above it. So fossils in deeper layers are older than fossils above it. Example below: C is older than B. B is older than A (See p107) Notes SPI 0807.5.5 Fossils

3. Chapter 15 (See p141: Fig 2) Images SPI 0807.5.5 Fossils

4. Chapter 15 Index Fossils: A way to date rocks with a relative age, Example: Ammonites fossils (see below) Notes

5. Chapter 15 Trilobites are index fossils (see image on right) Trilobites are extinct. Their closest living relative is the horseshoe crab. Index Fossils: Using Fossils to Date Rocks, continued Notes