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5 Cards in this Set
- Front
- Back
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Vertebrate Groups |
Mammals, birds, fishes, reptiles, and amphibians. |
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Ichthyology |
The study of fishes |
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Three classes of fishes: |
Agnatha, Chondrichthyes, and Osteichthyes |
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Defining features of Agnatha: |
"Jawless Fishes" -Round muscular mouth with rasping teeth-like structures -Elongated eel-like bodies -Round gill openings -one nostril -Cartilage skeleton -no scales -tough, fibrous skin and mucus -only have median fins along center line of body -Lampreys & Hagfish |
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Pacific Hagfish Class Agnatha |
