Cephalochordata and UrochordataCephalochordata and Urochordata

chordata  Phylum Chordata มีเนื้อเยื่อ 3 ชั้น มีสมมาตรแบบ Bilateral symmetry มีทางเดินอาหารแบบสมบูรณ์ มีช่องว่างในลำตัวแบบแท้จริง (True Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail

Phylum: Chordata General characteristics: All animals in the phylum Chordata possess four anatomical features at some point in their lifecycle Those Phylum Chordata Facts · All have a tubular nerve cord above the notochord, which is gelatin-like and encased in a

The meaning of CHORDATA is a phylum comprising animals having at least at some stage of development a more or less well-developed notochord, Chordata Haeckel, 1874 Abstract A chordate () is an animal of the phylum Chordata () All chordates possess five synapomorphies, or primary characteristics,