Kroh, A.; Mooi, R. (2025). World Echinoidea Database.
Hypsiechinus Mortensen, 1903. Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2025) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=123433 on 2026-01-22
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS).
Hypsiechinus Mortensen, 1903. Accessed at: https://www.marinespecies.org/DeepSea/aphia.php?p=taxdetails&id=123433 on 2026-01-22