Forbes, E. (1852). Monograph of the Echinodermata of the British Tertiaries. <em>Palaeontographical Society London.</em> 6: 1-36., available online athttps://www.biodiversitylibrary.org/page/12100203 page(s): 22; pl. 3: fig. 4 [details]
Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Cidaris websterianus Forbes, 1852 †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1033614 on 2025-09-12
Marine Species Traits editorial board (2025). Marine Species Traits. Cidaris websterianus Forbes, 1852 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1033614 on 2025-09-12
original descriptionForbes, E. (1852). Monograph of the Echinodermata of the British Tertiaries. <em>Palaeontographical Society London.</em> 6: 1-36., available online athttps://www.biodiversitylibrary.org/page/12100203 page(s): 22; pl. 3: fig. 4 [details]
basis of recordGregory, J. W. (1892). A revision of the British fossil Cainozoic Echinoidea. <em>Proceedings of the Geological Association.</em> 12: 16-60., available online athttps://doi.org/10.1016/S0016-7878(91)80024-4 page(s): 28 [details]
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