Definition of "invertebrata" [‖In•ver•te•bra•ta]

• A comprehensive division of the animal kingdom, including all except the Vertebrata. (noun-plural)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "These characteristics place man inevitably among the so-called vertebrata; he is certainly not an invertebrate, nor is the basic structure of his body such that a third group, outside the invertebrata and vertebrata, can be made to include only the single type -- man."
• "Even Agassiz, who was a believer in special creation and an opponent of evolution, was constrained to point out many other instances, mainly among the invertebrata, where there was a like correspondence between the ontogeny of existing species and their phylogenetic history as revealed by the fossil remains of their ancestors."
• "In the first four chapters of the fourth book the anatomy of the invertebrata is dealt with, and the accounts given of certain mollusca and crustacea are very careful and minute."