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29 Cards in this Set
- Front
- Back
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Time interval from formation of earth to present
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geologic time
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what we call animals and plants that have died off
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extinct
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change of living things over time
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evolution
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era the first mammals appeared in
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mesozoic
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the oldest era
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pre cambarian
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era that amphibians appeared
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palezoic
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era the earliest fish appeared
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palezoic
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the most current era
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cenozoic
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era when land plants and animals evolved
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palezoic
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era that earliest dinosaurs appeared
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mesozoic
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formed when less dense minerals floated to surface
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crust and mantle
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era humans appeared
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cenozoic
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the era in which humans evolved
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cenozoic
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estimated origin of earth
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4.6 billion years ago
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small units of geologic time
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period
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the supercontinent
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pangea
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ancient oceans
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hot and freshwater
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era in which dinosaurs were dominant
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mesozoic
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earliest organisms
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bacteria
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the era in which fish and trilobites dominant
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palezoic
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fossils from this era are very rare
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pre cambarian
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lizards snakes turtles
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reptiles
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special feature of primates
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opposable thumbs
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large units of geologic time
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eras
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traces of plants or animals in rocks
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fossils
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age of reptiles
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mesozoic
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more dense minerals sinking to earthe center formed this
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inner core
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adaptations and changes in living things over time
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evolution
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preserved remains of an organism
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fossils
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