Euplectellidae is a family of glass sponges (Hexactinellids) belonging to the order Lyssacinosa, first represented in the Ordovician fossil record, substantially older than molecular estimates of the clade's age.

[1] According to the World Register of Marine Species (WoRMS) the family includes the following subfamilies and genera: Subfamily Bolosominae Tabachnick, 2002 Subfamily Corbitellinae Gray, 1872 Subfamily Euplectellinae Gray, 1867

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