Chordates 1 - • Respiratory System: Gills or lungs •...

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Chordates BIOL 1407
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Deuterostomes Phylum Echinodermata Sea stars, sea urchins, sea cucumbers, crinoids Phylum Chordata Tunicates, lancelets, fishes, amphibians, reptiles, birds, mammals
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Phylum Echinodermata
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Phylum Chordata
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Characteristics of Chordates Bilateral symmetry Triploblastic Coelomate Segmented
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Phylum Cephalochordata: Lancelets
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Phylum Urochordata: Tunicates
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Major Chordate Clades Craniates: Cranium Vertebrates + Hagfishes Vertebrates : Vertebral Column Osteichthyans: Lung/Lung Derivatives Lobe-finned Fishes: Limb Bone Pattern Tetrapods: Four Well-Developed Limbs Amniotes: Amniotic Egg
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Hagfishes Craniates Head Simple cranium Not vertebrates
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Characteristics of Vertebrates Vertebral Column Complete Digestive System Closed Circulatory System
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Unformatted text preview: • Respiratory System: Gills or lungs • Excretory System: Kidneys • Centralized Nervous System Photo Credit for Platypus Skeleton at Melbourne Museum: Peter Halasz, 2006, Wikimedia Commons Lampreys • Vertebrates • No jaws or paired appendages Evolution of Jaws Chondrichthyes • Cartilaginous skeleton • Jaws Present • Paired Appendages Osteichthyans • Bony Skeleton • Lung and Lung Derivatives • Two Main Groups: – Ray-finned – Lobe-finned Ray-Finned Fishes • Fins are supported by fin rays • Swim bladders • Largest vertebrate group The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8 th ed. Pearson Benjamin Cummings. Slide #43 is from 7 th edition, Campbell, et al....
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This note was uploaded on 10/01/2011 for the course BIOL 1407 taught by Professor Lisagloyna during the Spring '09 term at Austin Community College.

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Chordates 1 - • Respiratory System: Gills or lungs •...

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