| 词条 | Hazeliidae |
| 释义 |
| taxon = Hazeliidae | fossil_range = {{fossil range|Chengjiang|Middle Ordovician|ref=[1]}} | image = Hazelia.jpg | image_caption = A specimen of Hazelia at the Mount Stephen Trilobite Beds | authority = Walcott, 1920 | subdivision_ranks = Species | subdivision={{linked species list |Falospongia|Rigby, 1986 |Hazelia|Walcott, 1920 |Crumillospongia|Rigby, 1986[1] }} The Hazeliidae are a family of spicular Cambrian demosponges known from the Burgess Shale, the Marjum Formation of Utah,[2] and possibly Chengjiang.[3] It was described by Charles Walcott in 1920. References1. ^{{Rigby1986}} {{Taxonbar|from=Q16947836}}{{cambrian-animal-stub}}{{ordovician-animal-stub}}{{demosponge-stub}}2. ^{{Cite journal| doi = 10.2307/1306598| 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-broken-date = 2018-09-26}} 3. ^1 {{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 }} 6 : Protomonaxonida|Ordovician invertebrates|Cambrian sponges|Prehistoric sponge families|Cambrian first appearances|Middle Ordovician extinctions |
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