Hazelia

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.

Hazelia
Temporal range:
A specimen of Hazelia at the Mount Stephen Trilobite Beds
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Porifera
Class: Demospongiae
Order: †Protomonaxonida
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

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

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