Kier, P. M. 1972. Tertiary and Mesozoic Echinoids of Saudi Arabia. Smithsonian Contributions to Paleobiology 10, 1-105., available online athttps://doi.org/10.5479/si.00810266.10.1 page(s): 52-53; figs. 24-25, pl. 22: figs 1-7 [details]
Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Leioechinus amplus Kier, 1972a †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1034408 on 2024-05-02
Marine Species Traits editorial board (2024). Marine Species Traits. Leioechinus amplus Kier, 1972a †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1034408 on 2024-05-02
original descriptionKier, P. M. 1972. Tertiary and Mesozoic Echinoids of Saudi Arabia. Smithsonian Contributions to Paleobiology 10, 1-105., available online athttps://doi.org/10.5479/si.00810266.10.1 page(s): 52-53; figs. 24-25, pl. 22: figs 1-7 [details]