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  • a cartilaginous rod that runs along the back (dorsal) of all chordates at some point in their life cycle.
    Source: Anthromorphemics
  • rodlike structure in the dorsal (back) side that is the forerunner of the backbone
    Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby

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