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Click two or more of the word chunk buttons on the left to form words that match the clues listed below.
WordClue
6 letters Any preserved evidence of a past geologic age; usually found in sedimentary rock.
10 letters The study of embryos and their development.
6 letters The shape of fossil _____ can tell us of....
6 letters In closer related forms, the earlier _____ of embryos are...
10 letters When a species dies off from the earth.
8 letters The development of a species through its life cycle
7 letters The principle that sedimentary rock layers are older than the rock layers that are above it and _____ than the rock layers below it.
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