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Unformatted text preview: B. the limb C. the amniotic egg membrane-bound water supply tough, waterproof outer shell Fish eggs = What is the adaptive significance of the amniotic egg? Which lineages of vertebrates are most species-rich? Clade # species Hagfish and lampreys 80 Sharks, rays, skates . . 900 Ray-finned fish Lobe-finned fish . 7 Amphibians (frogs, toads, salamanders) 4200 Turtles 260 Snakes and lizards . Crocodiles 22 Birds Mammals 4500...
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This note was uploaded on 04/10/2008 for the course BIOL 180 taught by Professor Freeman during the Fall '07 term at University of Washington.
- Fall '07