Plexechinus is a genus of echinoderms belonging to the monotypic family Plexechinidae.

The genus has almost cosmopolitan distribution.

Species:

  • Plexechinus aoteanus (McKnight, 1974)
  • Plexechinus cinctus Agassiz, 1898
  • Plexechinus hirsutus Mortensen, 1905
  • Plexechinus parvus (Mironov, 1978)
  • Plexechinus planus (Mironov, 1978)
  • Plexechinus spectabilis Mortensen, 1948
  • Plexechinus sulcatus David & Mooi, 2000