Phylum Chordata - Chordates Internal skeleton with muscle ...
Phylum Chordata - Chordates Internal skeleton with muscle ...
Phylum Chordata - Chordates Internal skeleton with muscle ...
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The defining chordate characteristics are preserved in the adultlanceletSubphylum Vertebrata - VertebratesAll vertebrates have a distinct head, <strong>with</strong> skull enclosing a brainName derived from bony vertebral segments in spinal columnVertebral column - protects dorsal nerve cordnotochord surrounded and replaced by vertebral columnPossess a cranium - brain caseGroup also called craniate chordatesMost have a bony <strong>skeleton</strong>, some use only cartilageAll have a closed circulatory system
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