ammonites

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Definition/MeaningWord/Phrase
from 405 million to 345 million years ago; dominance of fishes and appearance of amphibians and ammonites Age of Fishes , Devonian , Devonian period
from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects Lower Carboniferous , Lower Carboniferous period , Missippian period , Mississippian
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