chordata
อาณาจักรสัตว์ : Phylum Chordata สาระ ความรู้ ข่าวสาร ความบันเทิง ของ
The phylum Chordata contains all of the animals that have a rod-like structure used to give them support In most cases this is the spine or
เว็บไซต์ chordata The phylum Chordata contains all of the animals that have a rod-like structure used to give them support In most cases this is the spine or chordata An extensive vertebrate fossil record begins about 400 million years ago Embryological evidence places the phylum Chordata within the
chordata Living members of the phylum Chordata include four types of vertebrate chordates belonging to the subphylum Vertebrata fish, amphibians, birds and mammals - Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail The phylum Chordata consists of the invertebrate chordates—the subphylum Cephalochordata and the subphylum Urochordata —along with the
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