ERTH 2401 Lecture Notes - Lecture 5: Apatite, Bone Bed, Multicellular Organism
3 Nov 2015
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Dinosaurs have been extinct for 66 million years, so we need to understand. No! crystalline and sedimentary rock changed by heat, pressure and chemical uids. Fossil record: hard parts (good fossil record) Organs heart, brain (and stomach) would be immensely helpful. Skin (we sometimes get impressions, but real skin is very rarely preserved: amber is very helpful in preserving fossils (ex. insects) Possible high species diversity (invertebrates) all parts of ecosystem and animals" bodies still there ex. Reef assemblage, tidal pool ex. pollen can be used to reconstruct landscape according to different types of pollens belonging to different plants: death assemblage thanatocoenosis. Becomes a target for predators, scavengers; bacterial decay sets in: taphocoenoses transported death assemblage** Ocean currents and waves: fossil assemblage (fodere - to bury) **so if we nd a bone bed, we want to nd out if this is the original death site or if these bones have been naturally transported.
