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Definition
| early Paleozoic, arose coincident w/ bony fishes; sister group to bony fishes; early fossil record poor |
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Definition
| cartilaginous, calcified not ossified |
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Definition
| internal; claspers in male |
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Definition
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Definition
| derived from same tissue as scales; not fused w/ jaws, anchored in connective tissue; only in jaw margins; serial replacement(replacement whorls) |
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Definition
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Term
| static bouyancy mechanism |
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Definition
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Definition
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Definition
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Definition
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Definition
| w/ physiological care: oviparous, ovoviviparous, viviparous |
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Term
| success of chondrichthyes |
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Definition
| swimming adaptations, bouyancy control, body covering, osmoregulation adaptation, reproductive adaptations, sensory system |
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