Gregory, 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): 39-41; pl. 1: fig. 7 [details]
Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Agassizia æquipeta Gregory, 1892 †. Accessed at: http://www.marinespecies.org/echinoidea/aphia.php?p=taxdetails&id=1034951 on 2024-09-25
original descriptionGregory, 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): 39-41; pl. 1: fig. 7 [details]
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