animaltable_vert_ans

animaltable_vert_ans - Amphibia (frogs & toads)...

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Subphylum Class (common names) Vertebrae Jaws Teeth Paired Appendages Tetrapod Amniote Hair Urochordata (tunicates) no notochord no no no no no absent Cephalochordata (lancelets) no notochord no no no no no absent Vertebrata Myxini (hagfish) no - have cranium no no no no no absent Cephalaspidomorphi (lamprey) rudimentary no no no no no absent Chondrichthyes (cartilaginous fishes) yes yes yes yes no no absent Actinopterygii & Sarcopterygii (bony fishes) yes yes yes yes no no absent
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Unformatted text preview: Amphibia (frogs & toads) yes yes yes (not all) yes yes no absent Reptilia (snakes, lizards) yes yes yes yes yes yes absent Aves (birds) yes yes no yes yes yes absent Mammalia (mammals) yes yes yes yes yes yes present Note: Lamprey show the first signs of a vertebral column. Hagfish do not have a vertebral column, but they do have a cranium (brain case). Make sure you understand the significance of the derived features, as well as the other features we discussed in lecture....
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