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10 Cards in this Set
- Front
- Back
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Osteichthyes: Derived Characters |
1. Operculum 2. Swim bladder/lung (derived from gut) 3. Lepidotrichia 4. Endochondral bone |
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Actinopterygii: Derived Characters |
1. Single dorsal fin 2. Ganoid scales |
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Sarcopterygii: Derived Characters |
1. Paired fins with long muscular lobes 2. Pulmonary veins |
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Gnathostomata: Derived Characters |
1. Jaws 2. Teeth containing dentine 3. Three semicircular canals 4. Vertebral column 5. Ribs 6. Paired fins support by girdles 7. Two distinct olfactory tracts |
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Chondrichthyes: Derived Characters |
1. Placoid scales 2. Unique teeth & tooth replacement system 3. Liver used for buoyancy |
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Holocephali: Derived Characters |
1. Pelvic claspers 2. Autostylic jaws |
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Elasmosbranchii: Derived Characters |
1. Pelvic claspers 2. Hyostylic jaw |
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Chordata: Derived Characters |
1. Notochord 2. DHNC 3. Endostyle 4. Muscular posy-anal tail 5. Cephalization 6. Pharyngeal gill slits |
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Craniata: Derived Characters |
1. Distinct head region 2. One or more semicircular canals 3. Paired kidneys 4. Three part brain 5. Gill bars 6. Neural crest tissue |
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Vertebrata: Derived Characters |
1. Cartilagenous vertebral structures 2. Two or three semicircular canals |
