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77 Cards in this Set
- Front
- Back
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Precambrian
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4000-600 mya
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Cambrian
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542-490 mya
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Ordovician
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495-439 mya
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Silurian
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439-408.5 mya
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Devonian
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408.5-354 mya
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Carboniferous
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354-290 mya
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Permian
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290-251 mya
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Triassic
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251-206 mya
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Jurassic
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206-144 mya
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Cretaceous
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144-65 mya
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Paleocene
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1
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Eocene
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2
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Oligocene
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3
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Miocene
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4
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Pliocene
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5
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Pleistocene
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1.8 mya - 10,000 year bp
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Paleozoic
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542-251 mya
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Phanerozoic
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542 mya - present
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tertiary
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65-1.8 mya
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vendian
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600-540 mya
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Quaternary
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1.8 mya - present
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Holocene
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10,000 years bp - present
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Mesozoic
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251-65 mya
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Cenozoic
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65 mya - present
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Continents were mostly in the Southern Hemisphere;
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Ordovician
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Radiation of arine organisms, lived on sea floor 0r burrowing
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Ordovician
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Land: club mosses and horsetails
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Ordovician
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End: Ordovician, 75% marine species extinct
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Ordovician
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Northern continents coalesced
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Silurian
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Marine organisms dispersed widely
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Silurian
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; first ancestors of ferns
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Silurian
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land masses slowly moved northward
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Devonian
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radiation of marin animals, major groups of fishes
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Devonian
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gymnosperms appeared
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Devonian
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fish-like amphibians
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Devonian
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extinction, 75% of marine species
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Devonian
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glaciers, swamp forests
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Carboniferous
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forests fossilize to form coal
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Carboniferous
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terrestrial animals diversify
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Carboniferous
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snails, scorpions, centipedes, and insects were abundant
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Carboniferous
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amphibians become larger, and reptiles evolved from one amphibian lineage
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Carboniferous
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Pangaea
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Permian
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volcanic eruptions, glaciation
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Permian
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reptiles greatly outnumbered amphibians
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Permian
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mammalian lineage diverges from reptiles
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Permian
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End: Extinction, large meteorite hits northwestern Australia, volcanic euruptions poured lava into the oceans, O2 depleted. Oceanic turnover releases toxic CO2 and H2S, over 90% of species
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Permian
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start of period, small number of surviving organisms
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Triassic
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vertebrate lineages diversify
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Triassic
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Conifers and seed ferns predominate
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Triassic
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Frogs, turtles appear
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triassic
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reptile radiation, leading to dinosaurs, crocodilians, birds
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Triassic
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End: triassic extinction
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Triassic
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Laurasia (north and Gondwana(south)
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Jurassic
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Ray-finned fishes radiate
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Jurassic
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Salamanders and lizards, flying reptiles
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Jurassic
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dinosaur lineages, bipedal predators and quadrupedal herbivores
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Jurassic
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mammals appear
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Jurassic
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Gondwana begins to break apart
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Cretaceous
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flowering plants (angiosperms) evolve from gymnosperms
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Cretaceous
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mammals diversify, but are small
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Cretaceous
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Mass Extinction K/T: Large meteorite likely, kills all vertebrates larger than about 25 Kg
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Cretaceous
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four major episodes of glaciation
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Pleistocene
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radiationof vertebrates, angiosperms, pollenating insects, teleost fishes
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Pleistocene
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Homo erectus to Homo sapiens
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Pleistocene
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order of paleozoic
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Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian
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order of Phanerozoic
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Mesozoic, Cenozoic, Paleozoic
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Distinct continents
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Tertiary
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Drier, cooler climate
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Tertiary
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Grasslands spread
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Tertiary
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Invertebrates resemble those of today
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Tertiary
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Birds, mammals, and reptiles radiate
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Tertiary
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order of Tertiary
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Paleocene, Eocene, Oligocene, Miocene, Pliocene
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Ediacaran fauna
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Vendian
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order of Quaternary
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Pleistocene and Holocene
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Glaciations, extinctions of birds and mammals, domestication
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Holocene
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order of Mesozoic
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Triassic, Jurassic, Cretaceous
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order of Cenozoic
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Tertiary, Quaternary
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