Subphylum - Tunicata

Common name: Sea Squirts

Name derivation: “tunic”

  • Class: Appendicularia
  • Class: Ascidiacea
  • Class: Thaliacea

Number of Orders: 7

Number of Families: 35

Number of Genus: 214

Number of known Species: 3,127

Earliest Fossil Record: Early Cambrian 538 – 521 mya

Habitat: Marine

Size Range: 0.5 mm to 20 m (colonial)

Notes: Based on Catalogue of Life as of July 2024

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