Chordata is a phylum in the classification system used in biology.  Characteristics of organisms in the phylum Chordata is that they  have a nerve, or spinal, cord and phara … ngeal slits.3 people found this useful.he phylum Chordata is a taxonomic group. All animals which have a  spine, or backbone, are classified in the phylum Chordata. There  are three subphylums in Chordata: Uroch … ordata (tunicates),  Cephalachordata (lancelets), and Vertebrata (vertebrates).