hazeliidae

{{Short description|Extinct family of sponges}}

{{Automatic taxobox

| taxon = Hazeliidae

| fossil_range = {{fossil range|Chengjiang|Middle Ordovician|ref=}}

| image = Hazelia.jpg

| image_caption = A specimen of Hazelia at the Mount Stephen Trilobite Beds

| authority = Walcott, 1920

| subdivision=

{{linked species list

|Falospongia|Rigby, 1986

|Hazelia|Walcott, 1920

|Crumillospongia|Rigby, 1986{{Rigby1986}}

}}

}}

Hazeliidae is an extinct family of spicular Cambrian sea sponges known from the Burgess Shale, the Marjum Formation of Utah,{{Cite journal| jstor = 1306598| pages = 994–997| title = The First Occurrence of the Burgess Shale Demosponge Hazelia palmata Walcott, 1920, in the Cambrian of Utah| journal = Journal of Paleontology| volume = 71| issue = 6| year = 1997 |author1=J. Keith Rigby|author2= Lloyd F. Gunther |author3= Freida Gunther| doi = 10.1017/S0022336000035976| s2cid = 130706440}} and possibly Chengjiang.{{Cite journal| pages = 737–748| year = 2007| doi = 10.1016/j.geobios.2007.02.006| first1 = J.| volume = 40| title = 'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges| journal = Geobios| last1 = Botting| issue = 6 }} It was described by Charles Walcott in 1920.