Phylum Chordata
description
Transcript of Phylum Chordata
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Phylum Chordata
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Basic Overview
• Four main qualities make a Chordate. At some time during their development (humans included) Chordates have– A Notocord– Pharyngeal Gill Slits– Post-anal tail– A Hollow dorsal nerve cord
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The Notochord
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Pharyngeal Gill Slits
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Post-anal tail
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Tubular Nerve Chord
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Phylum Chordata -Subphylum Urochordata (tunicates)-Subphylum Cephalochordata(lancelets)-Subphylum Vertebrata(Craniata)
Class Agnatha Jawless fish; hagfish and lampreys
Class ChrondrichthesSharks, skates and rays
Class OsteichthesBony fish
Class ActinopterygiiRay- finned fish
Class SarcopterygiiLobe-finned fish
http://trc.ucdavis.edu/biosci10v/bis10v/media/ch16/vertebrate_evolution.html
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Pictures of classes
hagfish
lamprey
shark ray
General Bony Fish
Ray finned fish
Lobe-finned fish