(ofEchinus euryporus H.L. Clark, 1912)Clark, H. L. (1912). Hawaiian and other Pacific Echini. The Pedinidae, Phymosomatidae, Stomopneustidae, and Echinometridae. <em>Memoirs of the Museum of Comparative Zoölogy at Harvard College.</em> 34/4: 205-383., available online athttps://www.biodiversitylibrary.org/page/1325954 page(s): 266-267; pl. 93: figs 2-3, pl. 109: figs 4-6 [details]
Kroh, A.; Mooi, R. (2025). World Echinoidea Database. Gracilechinus euryporus (H.L. Clark, 1912). 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=1417453 on 2026-09-10
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Gracilechinus euryporus (H.L. Clark, 1912). Accessed at: https://marinespecies.org/DeepSea/aphia.php?p=taxdetails&id=1417453 on 2026-09-10
original description(ofEchinus euryporus H.L. Clark, 1912)Clark, H. L. (1912). Hawaiian and other Pacific Echini. The Pedinidae, Phymosomatidae, Stomopneustidae, and Echinometridae. <em>Memoirs of the Museum of Comparative Zoölogy at Harvard College.</em> 34/4: 205-383., available online athttps://www.biodiversitylibrary.org/page/1325954 page(s): 266-267; pl. 93: figs 2-3, pl. 109: figs 4-6 [details]
new combination referenceMinin, K.V., Petrov, N.B. & Vladychenskaya, I.P. (2014). Sea urchins of the genusGracilechinusFell & Pawson, 1966 from the Pacific Ocean: Morphology and evolutionary history. <em>Marine Biology Research.</em> 11/3: 253-268., available online athttps://doi.org/10.1080/17451000.2014.928413 page(s): 256-260; figs 1A, B, 3A, B, and 4A, B [details] Available for editors