History of Invertebrate

	Revision 4 . . November 6, 2001 12:57 am by Josh Grosse [Protostomes and deuterostomes satisfy most people, and discussion of such should go on Animalia]
	Revision 3 . . November 6, 2001 12:40 am by Vicki Rosenzweig [why the word "invertebrate" continues in common usage]

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