Phylum-Hemichordata These are recently added as a phylum under non-chordates, earlier these were considered as a sub-phylum under the phylum chordates. They possess a rudimentary structure in the collar region known as a stomochord, which is similar to a notochord in structure. The hemichordates are marine deuterostome animals, generally considered the sister group of echinoderms. They appeared in the lower middle of the Cambrian. Scientific classification of phylum hemichordate Scientific classification of phylum hemichordata Kingdom: Animalia Subkingdom: Eumetazoa Clade: ParaHoxozoa Clade: Bilateria Clade: Nephrozoa Superphylum: Deuterostomia Clade: Ambulacraria Phylum: Hemichordata…
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