Pycnoclavella is a genus of sea squirts first circumscribed by Walter Garstang in 1891.

[1] The generic name comes from the Ancient Greek πυκνός (puknós) meaning "closely united".

[1] In 1990, Patricia Kott placed Pycnoclavella in its own family, Pycnoclavellidae, but in 2008 it was moved back to Clavelinidae.

[4] As of 2018[update], WoRMS recognizes the following species:[2]

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