Kroh, A.; Mooi, R. (2024). World Echinoidea Database. Paleopneustoidea A. Agassiz, 1904. Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2024) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=852320 on 2024-05-01
Glover, A.G.; Higgs, N.; Horton, T. (2024). World Register of Deep-Sea species (WoRDSS). Paleopneustoidea A. Agassiz, 1904. Accessed at: https://marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=852320 on 2024-05-01