Kroh, A.; Mooi, R. (2025). World Echinoidea Database.
Palaeotropus thomsoni (A. Agassiz, 1880). 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=513428 on 2026-02-06
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS).
Palaeotropus thomsoni (A. Agassiz, 1880). Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=513428 on 2026-02-06