Amalosoma Fisher, 1948 (additional source)
Amalosoma eddystonense Stephen, 1956 (additional source)
Bonellia Rolando, 1822 (additional source)
Bonellia viridis Rolando, 1822 (additional source)
Echiurinae Quatrefages, 1847 represented as Echiuridae Quatrefages, 1847 (additional source)
Echiurus Guérin-Méneville, 1831 (additional source)
Echiurus abyssalis Skorikow, 1906 (additional source)
Echiurus echiurus (Pallas, 1766) (additional source)
Maxmuelleria Bock, 1942 (additional source)
Maxmuelleria faex (Selenka, 1885) (additional source)
Maxmuelleria lankesteri (Herdman, 1897) (additional source)
Prometor Fisher, 1948 (additional source)
Thalassema Pallas, 1774 (additional source)
Thalassema arcassonense Cuénot, 1902 (additional source)
Thalassema thalassema (Pallas, 1774) (additional source)