Vignette on fossils - PowerPoint PPT Presentation

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Vignette on fossils

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  1. Vignette on fossils • Pass fossils through – you can remove tags to look at fossils, but please replace them • These are my own, for the most part collected by myself – it is not hard to find fossils! You just have to know where to look • Please return all to the basket

  2. Fossils Ammonites Extinct! (=such animals do not exist/live today) They lived 220 – 65 million years ago in the sea

  3. Fossils Cephalopods • Are a group of marine mollusks (related to snails & clams) • Intelligent; many arms (tentacles) • Some are alive today! (Octopus, “Kraken”, Nautilus, Squid, “Calamares”) • Others are extinct and only known from fossils: Ammonites, Belemnites, etc.

  4. Fossils Cephalopods today

  5. Fossils Extinct cephalopods Belemnite Ammonite

  6. Fossils First things to notice about fossils: • Often hard to tell what they are! • Sometimes show animals or plants that do not exist any more (=are extinct) • Often show animals or plants that don’t live in the same place any more (seashell fossils found on mountaintops) • Usually hard-shelled parts fossilize, mostly from marine animals

  7. Fossils Fascinating fossil facts • Oldest fossils are almost as old as the planet!!! • First complex animal fossils from about 0.5 billion years ago • Usually form when dead animal is covered by sediment under water; sometimes in bogs/swamps; rarely deserts

  8. Footprints and tracks Dinosaur footprints

  9. Footprints and tracks

  10. Footprints and tracks Dinosaur footprints

  11. Footprints and tracks