(ofEugyrioides dalli Ritter, 1913)Ritter, W. E. (1913). The simple ascidians from the North-eastern Pacific in the collection of the United States National Museum. <em>Proc. U.S. Mus.</em> 45(1989): 427-509.[details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2024). Ascidiacea World Database. Pareugyrioides dalli (Ritter, 1913). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=250973 on 2024-06-23
original description(ofEugyrioides dalli Ritter, 1913)Ritter, W. E. (1913). The simple ascidians from the North-eastern Pacific in the collection of the United States National Museum. <em>Proc. U.S. Mus.</em> 45(1989): 427-509.[details]
original description(ofPareugyrioides bostrychobranchus Redikorzev, 1941)Redikorzev, V. (1941). Ascidien der Meere des fernen Osten der U.S.S.R. <em>Issl. Dalnebost. Mor. SSSR.</em> 1: 164-212 (In Russian with German descriptions).[details]