Anelassorhynchus Annandale, 1922 (additional source)
Bonelliopsis Fisher, 1946 (original description)
Echiura (taxonomy source)
Echiuridae Quatrefages, 1847 (additional source)
Eubonellia Fisher, 1946 (original description)
Listriolobus Fischer, 1926 [not Spengel, 1912] (subsequent type designation)
Listriolobus pelodes Fisher, 1946 (original description)
Nellobia Fisher, 1946 (original description)
Nellobia eusoma Fisher, 1946 (original description)
Poeobius Heath, 1930 (additional source)
Classification
On Poeobius Heath, 1930 Fisher wrote (1946, p.218) "A tenable hypothesis is that the echiuroids and Poeobius ... [details]
Etymology
According to Fisher (1946) the etymology is "thalassos (sea) + ema (dart)" . According to Nishikawa (1998) ... [details]