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| Front | Back |
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Hemichordata synapomorphies:
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Pharyngeal gill slits
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Chordata synapomorphies:
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• NOTOCHORD
• DORSAL HOLLOW NERVE CORD (DHNC)
• POSTANAL TAIL
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Urochordata / Asicidiacea or ascidiidae synapomorphies:
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• No DHNC, notochord, or postanal tail as adults
• Metamorphosis - absorb tail, notochord, and DHNC
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Cephalochordata synapomorphies:
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Notochord with striated muscles - increase stiffness
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Vertebrata/Craniata
synapomorphies:
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- Cranium
- Distinct head with most sensory organs
- Neural Crest cells
- Pronephric kidney
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Craniata Origins synapomorphies:
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Had brain, but no skull
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Agnatha synapomorphies:
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Jawless craniates
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