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The body structure in all vertebrates indicated that these organisms originated from Precambrian times. This has to due with having a back bone.

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βˆ™ 9y ago
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βˆ™ 14y ago

A Common Ancestor

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βˆ™ 15y ago

ur mom's but cheeks

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Q: The fundamental likeness of body structure in all vertebrates indicates that these organisms probably originate from?
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