Tetrapachylasma

Tetrapachylasma is a genus of symmetrical sessile barnacles in the family Pachylasmatidae. There are about five described species in Tetrapachylasma.

Species
These species belong to the genus Tetrapachylasma:
 * Tetrapachylasma arcuatum Jones, 2000
 * Tetrapachylasma aurantiacum (Darwin, 1854)
 * Tetrapachylasma ferrugomaculosa (Jones, 1993)
 * Tetrapachylasma ornatum Jones, 2000
 * Tetrapachylasma trigonum Foster, 1988