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Terms in this set (11)
How many fossil species are there?
How many species are alive and described today?
What kind of evolution does the fossil record support?
How does the fossil record support evolutionary theory?
Shows species change over time; gradualism; transitional & extinct spp
What is a tikatalik?
Fossil analysis + radiometric dating help determine geological age to be how old?
(ancient earth ~4.6 bil yrs.)
How is the fossil record is biased in what four ways?
Habitat • Taxonomic • Temporal • Abundance
How is the fossil record habitat biased?
Certain environments are better for fossilation because decay is slow moving and there is less disturbance by other creatures because burial is fast.
What habitats would be best for fossilization?
beaches and swamps
What habitats would be worst for fossilization?
deserts and grasslands
How is the fossil record taxonomically biased?
Hard parts are easier to
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