Echiuridae is a family of spoon worms in the suborder Echiurida. It is a monotypic family, the only genus being Echiurus. These worms burrow into soft sediment on the seabed.
The World Register of Marine Species recognises the following species in the genus:-[1]
Echiuridae is a family of spoon worms in the suborder Echiurida. It is a monotypic family, the only genus being Echiurus. These worms burrow into soft sediment on the seabed.
Les Echiuridae sont une famille de vers marins échiuriens.
Selon World Register of Marine Species (25 novembre 2017)[2] :
Les Echiuridae sont une famille de vers marins échiuriens.
螠蟲科（學名：Echiuridae）是動物界螠蟲目的一個科。根據Catalogue of Life，螠蟲目舊屬螠蟲動物門[3]，但按Dyntaxa今屬環節動物門多毛綱[1]。
本科現有物種15屬105種[2]。根據WoRMS在2004年的數據，本科可大致分為兩大亞科，以及部份無法歸類的屬[4][5]：
按Catalogue of Life[3]和Dyntaxa[1]，以下為一科物種的Cladogram：
Echiura Echiuridae
