Echiuroinea

Translingual thumb|Ochetostoma erythrogrammon species, a species of Echiuroinea Etymology mul Echiurus oinea Proper noun order class Polychaeta spoon worms Usage notes Recent work, followed by ITIS, recategorizes Echiuroidea order as Echiura subclass, a subclass of class Sedentaria subclass, within the Polychaeta class. Ruggiero et al. and NCBI have followed a renaming of Echiuroidea order as Echiuroinea. Hypernyms order ; Echiura subclass subclass Hyponyms order Bonelliida suborder, Echiurida suborder suborders Bonelliidae family, Ikedidae family; Echiuridae family, Thalassematidae family, Urechidae family families Coordinate terms order Heteromyota order, Xenopneusta order orders References Echiuroidea Echiuroidea 41798 1 154974 Echiuroidea 1 110342 1