Echinoderms and Chordates: Introduction to the phylum and fishes ...

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Subphylum Cephalochordata: the lancelets Lancelet (Branchiostoma or Amphioxus) Fig. 34.5b
Fig. 34.12: Vertebrates possess elaborate heads with large brains and a cranium, and a vertebral column. Pharyngeal gill slits CHORDATA Dorsal hollow nerve cord Notochord Muscular, post-anal tail Outgroups to Chordata Vertebrae, cranium Jaws Lungs, internal bone (endoskeleton) Lobed fins Radial symmetry Water vascular system Loss of pharyngeal gill slits Limbs Amniotic egg Scales with hard keratin Loss of pharyngeal gill slits Lactation, fur Echinoderms Acorn worms Xenoturbella Lancelets Tunicates Hagfish Lampreys Sharks, rays, skates Ray finned fishes Coelacanths Lungfish AMPHIBIA Frogs, toads Salamanders Mammals REPTILIA Lizards, snakes Turtles Alligators, crocodiles Birds Protostomes Deuterostomes CHORDATA CHORDATA VERTEBRATA GNATHOSTOMATA SARCOPTERYGII TETRAPODA AMNIOTA
Page 1 and 2: Echinoderms and Chordates: Introduc
Page 3 and 4: Echinoderms have a water vascular s
Page 5 and 6: Echinoderm diversity: Class Asteroi
Page 7 and 8: Sea urchin eating kelp
Page 9 and 10: Prey shift in killer whales after s
Page 11 and 12: Bizarre defense mechanisms in sea c
Page 13 and 14: Figure 34.1: The other large Deuter
Page 15 and 16: Sub-phylum Urochordata: the sea squ
Page 17: The larvae has them! Larva Urochord
Page 21 and 22: Spread of lampreys
Page 24 and 25: While snorkeling, you come across a
Page 26 and 27: The lateral line system that is use
Page 28 and 29: Human propaganda…..
Page 30 and 31: Fig. 34.12: Bony Vertebrates includ
Page 32 and 33: Fig. 34.12: Bony Vertebrates includ
Page 34 and 35: operculum The ray-finned fishes hav
Page 36 and 37: Fig. 34.12: The aquatic bony verteb
Page 38: Barreleye fish have a transparent

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