Hazeliidae

Hazeliidae Temporal range: Chengjiang–Middle Ordovician PreЄ Є O S D C P T J K Pg N
A specimen of Hazelia at the Mount Stephen Trilobite Beds
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Demospongiae
Order:	Monaxonida
Family:	Hazeliidae Walcott, 1920
Species
Falospongia Rigby, 1986 Hazelia Walcott, 1920 Crumillospongia Rigby, 1986

The Hazeliidae are a family of spicular Cambrian demosponges known from the Burgess Shale, the Marjum Formation of Utah, and possibly Chengjiang. It was described by Charles Walcott in 1920.