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Subphylum Urochordata

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Subphylum Urochordata (4 classes, +8 orders, +25 families, 2000 species)
Tunicates

• Class Appendicularia (1 order, 3 families, 12 genera, 50 species)
  Free Swimming Tunicates
  Appendicularian
• Class Ascidiaceae (3 orders, 19 families, +90 genera, +377 species)
  Sea Squirts
  Pyrosoma
• Class Sorberacea (1 order, 1 family, 3 genera, 6 species)
  Benthic Tunicates
  Tunicate
• Class Thaliacea (3 orders, 3 families, 19 genera, 35 species)
  Salp

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