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Neorhabdocoela , Rhabdocoela (Neorhabdocoela; class Turbellaria, subclass Neoophora) An order of worms which possess a simple intestine. The pharynx is present. Most… Gastrotricha , Gastrotricha (phylum Aschelminthes) A small class (or phylum in some classifications) of microscopic, pseudo-coelomate worms in which an excretory sy… heterodont , heterodont
1. (invertebrate) Applied to a hinge dentition occurring in the Bivalvia, where teeth of differing sizes occur in the hinge plate. The tee… Demosponges , Demospongiae (Demospongea; phylum Porifera) A class of sponges which occur in both marine and freshwater environments. They have a leucon body struct… Placodermi , Placodermi Class of archaic, jawed (gnathostome), and heavily armoured fish, which appeared in the Devonian and which were virtually extinct by the e… Polychaetes , Polychaeta (bristleworms; phylum Annelida) Class of annelid worms which possess distinct metameric segmentation. All have bristly parapodia (movable,…
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NEARBY TERMS
Leucettida