Clark, H. L. (1914). Hawaiian and other Pacific Echini. The Clypeasteridae, Arachnoididae, Laganidae, Fibulariidae, and Scutellidae. <em>Memoirs of the Museum of Comparative Zoology at Harvard College.</em> 46/1, 1-80., available online athttp://archive.org/stream/memoirs46harv#page/n9/mode/2up page(s): 64-65; pl. 128: fig 1-3 [details]
Holotype USNM 34208, geounit Hawaiian Exclusive Economic Zone [details]
Kroh, A.; Mooi, R. (2025). World Echinoidea Database. Echinocyamus incertus H.L. Clark, 1914. 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=513230 on 2026-07-11
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Echinocyamus incertus H.L. Clark, 1914. Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=513230 on 2026-07-11
original descriptionClark, H. L. (1914). Hawaiian and other Pacific Echini. The Clypeasteridae, Arachnoididae, Laganidae, Fibulariidae, and Scutellidae. <em>Memoirs of the Museum of Comparative Zoology at Harvard College.</em> 46/1, 1-80., available online athttp://archive.org/stream/memoirs46harv#page/n9/mode/2up page(s): 64-65; pl. 128: fig 1-3 [details]
context source (Deepsea)Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online athttp://www.iobis.org/[details]
basis of recordMortensen, T. (1948). A Monograph of the Echinoidea. IV, 2. Clypeasteroida. Clypeasteridæ, Arachnoidæ, Fibulariidæ, Laganidæ and Scutellidæ. 471 pp., C. A. Reitzel, Copenhagen. page(s): 193-194 [details]
Present Inaccurate Introduced: alien Containing type locality
Holotype USNM 34208, geounit Hawaiian Exclusive Economic Zone [details]