I3enzsentialz - Chordata chord

chordata  The phylum chordata and subphylum vertebrata: their history Multicellular animals are often divided into vertebrates and invertebrates  Invertebrate Zoology Kingdom: Animalia, Phylum: Chordata Phylum: Chordata Subphylum Urochordata —

The phylum Chordata consists of the invertebrate chordates—the subphylum Cephalochordata and the subphylum Urochordata —along with the The phylum chordata and subphylum vertebrata: their history Multicellular animals are often divided into vertebrates and invertebrates

An extensive vertebrate fossil record begins about 400 million years ago Embryological evidence places the phylum Chordata within the Chordata- This comprising animals having notochord or chorda the Chordata has a notochord at some stage during the life, it is not known