Invertebrata | definition of Invertebrata by Medical dictionary
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A general category of the kingdom Animalia (multicellular animals) including those phyla the members of which lack a notochord; that is, all animals except vertebrates in the phylum Chordata.
References in periodicals archive
Year was a significant factor for the groups Selachimorpha, Serranidae, Batoidea, and Invertebrata
New and little known invertebrata
from the Neocomian of Kansas.
Fauna Sinica: Invertebrata
Arachnida: Araneae: Tetragnathidae.