hemighordata defined in 1951 yearhemighordata - hemighordata (enteropneusta);
hemighordata - Small group of marine animals, included in the Protochordata; contains worm-like burrowing Balanoglossus, and sedentary ciliary feeders Cephalodiscus and Rhabdopleura. They have gill-slits; a structure sometimes regarded as notochord in anterior region only; nerve cord solid and superficial except in anterior region where it is hollow. Embryology suggests relationship with Echinodermata.
near hemighordata in Knolik
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