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Biology 23 Online
OpenStudy (anonymous):

which of these is false? a. Early mammals evolved in the middle of the Paleozoic b. Early marine invertebrate evolved in the early Paleozoic

OpenStudy (anonymous):

http://www.fossilmuseum.net/Paleobiology/Paleozoic_paleobiology.htm this might help

OpenStudy (anonymous):

that's a lot to read.. but thank you

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