About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 35. Chapters: Chordate anatomy, Chordate stubs, Tunicates, Vertebrates, Ascidiacea, Craniata, Lancelet, Pikaia, Salp, Gnathostomata, Pyrosome, Pycnoclavela diminuta, Pyura, Larvacea, Doliolida, Tetrapodomorpha, Styela clava, Thaliacea, Teleostomi, Corella willmeriana, Chordate genomics, Haikouella, Didemnum, Clavelina moluccensis, Botrylloides violaceus, Pleurogona, Branchiostoma, Oikopleura, Microcosmus sabatieri, Clavelina robusta, Pyura stolonifera, Endostyle, Euteleostomi, Clavelina picta, Ciona, Cephalochordata, Predatory tunicate, Limbless vertebrates, Aspiraculata, Hemovanadin, Clavelina sabbadini, Pyura spinifera, Styela plicata, Aplousobranchia, Sorberacea, Haementeria ghilianii, Metaspriggina, Phlebobranchia, Botrylloides leachi, Didemnidae, Clavelinidae, Clavelina lepadiformis, Pyuridae, Stolidobranchia, Halocynthia, Polyclinidae, Dorsal nerve cord, Enterogona, Branchiostomidae, Eusynstyela misakiensis, Nephtheis fascicularis, Branchiostoma floridae, Cionidae, Yarnemia, Amphirhina, Agnesiidae, Litteratura Serpentium, Hatschek's pit, Varanopsidae, Diazonidae, Doliolum, Hexacrobylidae, Cheungkongella, Cristozoa, Archidistoma. Excerpt: Chordates (phylum Chordata) are animals which are either vertebrates or one of several closely related invertebrates. They are united by having, for at least some period of their life cycle, a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail. The phylum Chordata consists of three subphyla: Urochordata, represented by tunicates; Cephalochordata, represented by lancelets; and Craniata, which includes Vertebrata. The Hemichordata have been presented as a fourth chordate subphylum, but they are now usually treated as a separate phylum. Urochordate larvae have both a notochord and a nerve cord which are lost in adulthood. Cephalochordates have a notocho...
