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Protochordates

Protochordates. Chordates Attributes. Dorsal hollow nerve cord Notochord Bilateral symmetry Pharyngeal gill slits Post-anal tail Ventral circulatory system. Hemichordata. Acorn worm--marine substrate dwelling individuals Colonial tube creatures with tentacular crowns

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Protochordates

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  1. Protochordates

  2. Chordates Attributes • Dorsal hollow nerve cord • Notochord • Bilateral symmetry • Pharyngeal gill slits • Post-anal tail • Ventral circulatory system

  3. Hemichordata • Acorn worm--marine substrate dwelling individuals • Colonial tube creatures with tentacular crowns • Connections to the other deuterostomes • Have some chordate features • Larval stage is the dipleurula larval stage which is very similar to the bipinnaria larval stage of the echinoderm

  4. Chordata • Urochordata--tunicates • Cephalachordata

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