Evolutionary primitive multicellular organisms

Billions of years ago, the genetic code of primitive cells was passed from generation to generation and finally to multicellular organisms, then to invertebrates, and then to vertebrates around 600 million years ago. Because amphioxus, Pikaia, and their kin are transitional forms between invertebrates and vertebrates, the amphioxus can be thought of as the evolutionary gateway to humanity, to more developed brains, and to consciousness. Amphioxus, the gate, a creature born millions of year ago... Why do humans exist The answer quite simply is because amphioxus and its kin were born eons ego and lived to survive. 

The pathology of scurvy has been summarized as a generalized structural breakdown of the intercellular matrix associated with undifferentiated cell proliferation, or in evolutionary terms (provided such a disintegrating individual could be kept alive), the gradual reversion from multicellular organization to a primitive unicellular state (50). 

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