Source:http://linkedlifedata.com/resource/umls/id/C0920312
CSP: animals specifically distinguished by having a dorsal hollow nerve cord, notochord, and gill slits in pharynx; includes animals with fully developed backbone (vertebrates) and those with notochord only; can be marine, freshwater, or terrestrial.,MSH: Phylum in the domain Eukarya, comprised of animals either with fully developed backbones (VERTEBRATES), or those with notochords only during some developmental stage (CHORDATA, NONVERTEBRATE).