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CSU - BC 103 - Class Notes - Week 7

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CSU - BC 103 - Class Notes - Week 7

School: Colorado State University
Department: Biology
Course: Biology of Organisms-Animals and Plants
Professor: Jennifer Dewey
Term: Fall 2016
Tags: chordata, urochordates, amphibians, reptiles, birds, Vertabrates, and mammal
Name: Life 103 Lab week 7 class notes
Description: these notes cover phylum chordata
Uploaded: 10/07/2016
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background image Phylum chordata  4 characteristics - not always present in every form   Notochord   May become vertebral column in some animals  Dorsal hollow nerve cord  Becomes spinal cord  Pharyngeal gill slits  Postanal tail  Subphylum Urochordata  1. Tunicates - sea squirts  i. Invertebrates  ii. Filter feeders  iii. Adults only exhibit one of the 4 characteristics  1. Pharyngeal gill slits   subphylum cephalochordata  1. Lancelets   a. Invertebrates  b. Filter feeders  c. All 4 characteristics in adult form  Subphylum vertebrata  1. Class myxini  a. Hagfish   i. No vertebral column  2. Class petromyzontida  a. Lampreys   i. Parasitic   3. Class Chondrichthyes   a. Cartilaginous  fish  i. Sharks   ii. Rays  iii. Skate  1. Skeleton is made of cartilage  with bony jaw  4. Class Actinopterygii   a. Ray finned fish  i. Bony veins used for fin  structure  5. Class Sarcopterygii   a. Lobed finned fish -bone nubs 

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School: Colorado State University
Department: Biology
Course: Biology of Organisms-Animals and Plants
Professor: Jennifer Dewey
Term: Fall 2016
Tags: chordata, urochordates, amphibians, reptiles, birds, Vertabrates, and mammal
Name: Life 103 Lab week 7 class notes
Description: these notes cover phylum chordata
Uploaded: 10/07/2016
2 Pages 27 Views 21 Unlocks
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