| |  | To date, we have discussed nature of fossils and geologic principles. | 
 |  | In the next several lectures, we will cover the diversity of life and the major biologic principles needed to interpret the fossil record. | 
 |  | Life is "organized/catagorized" by humans | 
 |  | This organization evolves with our understanding | 
 |  | Life is not organized by increasing steps of evolution | 
 | Organizational Scheme (Linnaeus) | 
 |  | Eubacteria  ("True bacteria", mitochondria, and chloroplasts) | 
 |  | Archaea  (Methanogens, Halophiles, Sulfolobus, and relatives) | 
 |  | Eukaryotes  (Protists, Plants, Fungi, Animals, etc.) | 
 |  | Kingdom Protista (single-celled animals) | 
 |  | Kingdom Chromista (single-celled plants) | 
 |  | Kingdom Animalia (Metazoa) | 
 |  | Phyla Cnidaria (anemomes, jellyfish, corals) | 
 |  | class crustacea (crabs, lobster, barnacles) | 
 |  | class myriapoda (millipedes, centipedes) | 
 |  | class arachnida (spiders) | 
 |  | class gastropoda (snails) | 
 |  | class cephalopoda (squid, octopus, ammonites) | 
 
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