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Reverted edits by [[Special:Contributions/AnitaP|AnitaP]] ([[User talk:AnitaP|Talk]]); changed back to last version by [[User:EdBot|EdBot]]
A '''notochord''' is a rod of tough, flexible material that runs the length of a creature's body, providing the majority of its support.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. ApologiaEducational Ministries, Inc. 1998</ref> Presence of a notochord at some point in developedment development is one of the primary attributes of the phylum [[chordata]]. Notochord also refers to the creatures that exhibit them as adult animals, notably, the [[shark]]s and [[ray]]s.
==References==
