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Unformatted text preview: ) Mold 4) Trace fossil 5) Cast 45 What kind of fossil is this? What
1) Chemical fossil 2) Carbonized film 3) Mold 4) Trace fossil 5) Permineralized Fossil
Animal Feces 41 Transitional Species Transitional
“..why, if species have descended from other ..why, species by insensibly fine gradations, do we not everywhere see innumerable transitional forms?” forms?” Charles Darwin, 1859 Charles Darwin’s Answer: Darwin’s There are imperfections in the fossil There record record List as many as you can List 1. 2. 3. Why do imperfections exist in the fossil record? fossil Most organisms don’t fossilize well Tissues differ in their likely hood to fossilize Environments differ in their likely hood to produce Environments fossils fossils Fossils are hard to find Fossils are destroyed by erosion & disturbances Many fossils are inaccessible Under ice, snow, sea & earth Fossils on surface aren’t ancient May be in politically sensitive areas WHERE ARE THE MISSING LINKS? WHERE 1. IMPERFECTIONS IN THE FOSSIL 1. REC...
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