28-Vertebrates1 - VERTEBRATES VERTEBRATES Fishes Birds...

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Unformatted text preview: VERTEBRATES VERTEBRATES Fishes Birds Amphibians Reptiles Mammals T FISHES FISHES EVOLUTION OF PAIRED FINS AND JAWS The Oldest Fishes Early Cambrian of China- 530 Ma Myllokunmingia- Hagfish Near-Relative Myllokunmingia Haikouichthys- Lamprey Relative Sacabambaspis Arandaspids (Mid-Ordovician of Bolivia) Astraspis Astraspids (Mid-Ordovician of North America) Agnathans: Ostracoderms bony-skins The Oldest Definite Fishes agfish amprey Cyclostomes: Hagfish and Lamprey Only Living Agnathans (Jawless Fish) Hagfish Slime artial Cranium o Vertebrae o Bone, only Cartilage Isotonic with Salt Water roduces Slime Mucous Hagfish: Craniate But Not a Vertebrate Lamprey Mouth (no jaws) ea Lamprey ( Petromyzon marinus ) Attached to Fish Attachment Scar on Fish Lamprey Dinichthys (Devonian) PLACODERMS flat-plated skins (Mid-Silurian to late Permian) Dunkleosteus occosteus cuspidatus Ptericthyodes milleri Early Jawed Fish Leopard Shark Hammerhead Shark Stingray Chondrichthyes (Cartilagenous Fish) Sharks and Rays Whale Shark ( Rhincodon typus ) The Largest Fish sually 10-15 feet, but can get up to 21 feet long; p to 2.5 tons....
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28-Vertebrates1 - VERTEBRATES VERTEBRATES Fishes Birds...

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