03ArthropodsS08

03ArthropodsS08 - Announcements W e b p a g e s u p (s e e...

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1 Announcements Web pages up (see my home page) Today s reading (mostly on reserve) Anderson: pages on lecture topic handout •pp. 289-299 only for the big picture! Text: pp 178-183, 202-21 Phylum Onychophora and Tardigrada Phylum Onychophora and Tardigrada Like arthropods, both groups have Reduced coelom (body cavity) Open circulatory system Outer covering (cuticle) Onycophorans sister group to arthropods Tardigrades can live in extreme environments
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2 Introduction to Phylum Arthropoda Introduction to Phylum Arthropoda Very old group of animals (>500 MYBP) Oldest fossils in ocean Highly diverse in water and on land. Four major living groups, others extinct Arthropod Features Body plan bilateral symmetry metamerism paired jointed appendages tagmata (tagma) exoskeleton
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3 Arthropod Features Jointed appendages sensory structures feeding appendages locomotion reproductive structure Uniramous or
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This note was uploaded on 03/02/2012 for the course BIOLOGY 323 taught by Professor Rank during the Spring '08 term at Sonoma.

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03ArthropodsS08 - Announcements W e b p a g e s u p (s e e...

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