Fossils
- 2. What is a FossilFossil? Fossils (from Latin fossus, literally "having been dug up") are the preserved remains or traces of animals, plants, and other organisms from the remote past.
- 3. • Sedimentary rocksSedimentary rocks • In what type of rockswhat type of rocks do we usually find fossilsfossils?
- 4. • Why would you not expect to find fossils in igneous rocks? • Can you find fossils in metamorphic rocks? blog.senhordesign.com
- 5. • Coprolites and icnites are fossils too. A coprolite is fossilized animal dung (feces) Icnites (dinosaurs' footprints) Enciso-LaRioja-
- 6. Index fossils • Index fossilsIndex fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages).
- 8. Index fossil features The ideal index fossilsideal index fossils are those that are: • abundant, • easy to identify, • short-lived, • widely distributed, • and occur in many types of rocks.
- 9. Describe howDescribe how fossilsfossils are formed inare formed in sedimentary rocks…sedimentary rocks… Check this animated explanation http://www.bbc.co.uk/sn/prehistoric_life/dinosaurs/making_fossils/makingfossils/index.shtml http://www.classzone.com/books/earth_science/terc/content/visualizations/es2901/es2901page01.cfm?chapter_no=visualization
- 10. Describe how fossils are formed in sedimentary rocks… http://www.science-graphics.net
- 11. Describe how fossils are formed in sedimentary rocks… •
- 12. Do all animals fossilizze?Do all animals fossilizze?
- 13. Do all animals fossilizze? Most animals did not fossilize; they simply decayed and were lost from the fossil record. Paleontologists estimate that only a small percentage of the dinosaur genera that ever lived have been or will be found as fossils.
- 14. • What important facts can fossils tells us about sedimentary rocks and the environment in which they were formed? • In what ways is the fossil record importance to science? blog.senhordesign.com
- 15. Trilobite
- 16. Trilobite • (meaning "three lobes") Trilobites are a well- known fossil group of extinct marine arthropods that form the class Trilobita. • When trilobites first appeared in the fossil record they were already highly diverse and geographically dispersed. Because trilobites had wide diversity and an easily fossilized exoskeleton an extensive fossil record was left, with some 17,000 known species spanning Paleozoic time.
- 18. Ammonite • Ammonites are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda.
- 19. Ammonite • Late Silurian - Cretaceous
- 20. Belemnites • Belemnites were numerous during the Jurassic and Cretaceous periods Belemnites are the internal shells of an extinct type of cephalopod mollusc related to modern octopus and squid.
- 21. Nummulite • A nummulite is a large lenticular fossil, characterized by its numerous coils, subdivided by septa into chambers. They are the shells of the fossil and present-day marine protozoan
- 22. The name "Nummulites" is a diminutive form of the Latin nummulus meaning "little coin", a reference to their shape
- 23. Nummulite • They are common in Tertiary marine rocks, particularly around the Mediterranean. http://geology.com/publications/lyell/ch16.shtml
- 24. Which one is older? http://www.physicsforums.com/showthread.php?t=63524
- 25. Which one is older? http://www.physicsforums.com/showthread.php?t=63524
- 26. Which one could we easily find in the Pyrenees? http://www.physicsforums.com/showthread.php?t=63524
- 27. Which one could we easily find in the Pyrenees? http://www.physicsforums.com/showthread.php?t=63524
- 28. Which one could we easily find in the Pyrenees? http://www.physicsforums.com/showthread.php?t=63524 Why?Why?
- 29. Which one could we easily find in the Pyrenees? http://www.physicsforums.com/showthread.php?t=63524 Why? Tertiary –Tertiary – Alpine orogeny –Alpine orogeny – PyreneesPyrenees
- 30. • http://en.wikipedia.org/ • http://www.nhm.ac.uk/nature-online/earth/fossils/fossil-folklore/fossil_types/ • http://wiki.answers.com/Q/What_are_three_characteristics_of_a_good_index_fossil • http://www.enchantedlearning.com/subjects/dinosaurs/dinofossils/Fossilhow.html • http://www.bbc.co.uk/sn/prehistoric_life/dinosaurs/making_fossils/makingfossils/index.shtml • Icnite picture at Enciso La Rioja, from • http://www.vallenajerilla.com/berceo/rioja-abierta/pangea/anteshistoria.htm