Unit5 Key Terms 0.0 / 5 ? GeologyEvolition of Life, Earth and ClimateA2/A-levelOCR Created by: Gabby-ACreated on: 23-05-16 10:54 Trace Fossil Preserves the activity of an organism (e.g. tracks and trails) 1 of 9 Fossil Life Assemblages A collection of organisms found within sediments in the same positions they would have been when they were alive (e.g. a bivalve in a burrow) 2 of 9 Fossil Death Assemblages A collection of organisms found in a different place and position than they occupied in life (e.g. dissarticulated shells) 3 of 9 Derived Fossils Fossils found in one rock, weathered out and re-deposited in another rock. The different fossils may provide conflicting dates. 4 of 9 Diplodocus A sauropod herbivore common in the Jurassic and Cretaceous 5 of 9 Tyrannosaurus A therapod carnivore common in the late Cretaceous 6 of 9 Iguanodon An ornithopod herbivore common in the late Jurassic (could be quadrupedal and bipedal) 7 of 9 Archaeopteryx First known bird-like fossil, believed to be intermediate between birds and reptiles 8 of 9 Mass Extinction When there is a massive decrease in the number of different species, over a relatively short period of time (could be over a few million years) 9 of 9
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