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Definition
| This group of large Paleozoic tetrapods is arguably an "artificial" group. |
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Definition
| Fis in this group (gars) swim alongside prey and attack with needle like teeth. |
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Definition
| This group incluse all fish with cartilaginous skeletons including holocephali and elasmobranchii. |
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Definition
| During the silurian, plantlife include this group, which had unbranced stems with pore producing structures. |
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Definition
| This group (caecilians) is made up of legless burrowing or aquatic amphibians. |
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Definition
| This group of osteichthyan fishes is characterized by fins containing bones and muscles from which the tetrapod limb was derived (includes all lobe finned fishes). |
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Definition
| This group inclues living sharks with gill openings on the sides of thier heads, and it excludes skates and rays. |
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Definition
| This group (sturgeons and paddlefishes) is composed of large, active, benthic, fish with strongly heterocercal tails and rows of enlarged armor like scales. |
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Definition
| This group (salamanders) has the most generalized body form of the living amphibians. |
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Definition
| Fish in this group have fins primarily supported by rays rather than bones (includes all ray finned fishes) |
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Definition
| This group has Weberian apparatus ( to enhance hearing) and includes two main groups: Salmoniforms and Ostariophysi. |
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Definition
| Fish in this group ( bowfins) use suction to prey on almost any animal smaller then themselves. |
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Definition
| Amphibians in this group have posterior vertebrae fused into a urostyle. |
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Definition
| This group of elasmobranches includes skates and rays but not sharks. |
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Term
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Definition
| Fish in this early elasmobrach group looked like sharks except that their mouths were not terminal. |
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