Hazelia

Hazelia 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
Genus:	Hazelia Walcott 1920
Species
H. palmata Walcott, 1920 (type) H. conferta Walcott, 1920 H. crateria Rigby, 1986 H. delicatula Walcott, 1920 H. dignata (Walcott, 1920) Rigby & Collins, 2004 H. grandis Walcott, 1920 H. luteria Rigby, 1986 H. obscura Walcott, 1920 H. lobata Rigby & Collins, 2004

Hazelia is a genus of spicular Cambrian demosponge known from the Burgess Shale, the Marjum formation of Utah, and possibly Chengjiang. It was described by Charles Walcott in 1920.

Its tracts are mainly radial and anastomose to form an irregular skeleton. Its oxeas form a fine net in the skin of the sponge.