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22 paź 2024 · chordate, any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla—the tunicates (subphylum Tunicata) and cephalochordates (subphylum Cephalochordata).
12 kwi 2021 · PDF | On Apr 12, 2021, Veronica Slobodian and others published Vertebrates (Chordata) | Find, read and cite all the research you need on ResearchGate.
Aquatic chordates—such as tunicates, fishes, and amphibian larvae—use gills for respiration. Land vertebrates, including adult amphibians, reptiles, birds, and mammals, use lungs. Some chordates have respiratory structures in addition to gills and lungs. Bony fishes have accessory organs such as simple air sacs.
2 paź 2024 · What is Chordata? The phylum Chordata represents a diverse and highly organized group of animals that share four key anatomical features at some stage of their life cycle. These features include the notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail.
Origin of Chordates 63. 3. Agnatha 70-87. Definition 70 Classification 70 Museum Specimens 73 Detailed Type Study. Petromyzon 77 Myxine 81 Jamoytius 85. Ostracoderm 83 Origin of Vertebrates 86. IX. 4. Pisces 88-298 ... Chordate Phylogeny. 1. Origin of Chordates 63 2. Ostracoderm 83 3. Origin of Vertebrates 86 4. Placoderms 250 5. Holocephali ...
Chordates consist of three distinct animal groups: cephalochor-dates, urochordates (tunicates) and vertebrates. This review starts with a brief description of how the Phylum Chordata and its three subphyla were orig-inally defined, and then discusses how we should reclassify the major chordate groups. 2.
Animals in the phylum Chordata share four key features that appear at some stage during their development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. In some …
