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fossil – n. something (such as a leaf, skeleton, or footprint) that is from a plant or animal which lived in ancient times and that you can see in some rocks
skull – n. the structure of bones that form the head and face of a person or animal
limb – n. a leg or an arm
convey – v. to make (something) known to someone
Garden of Eden – n. in the Bible: the garden where Adam and Eve first lived
spearhead – n. the sharp point on a weapon with a long straight handle
ancestor – n. something in the past from which something else has developed
