{{Automatic taxobox | fossil_range = Middle Cambrian – Middle Ordovician, {{fossilrange|508|460}}<!--- needs to be further restricted ---> | image = Agnostus-pisiformis.png | image_caption = ''Agnostus pisiformis'' | display_parents = 2 | taxon = Agnostidae | authority = McCoy, 1849 | synonyms = Micragnostidae <small>Howell, 1935</small>, Glyptagnostidae <small>Whitehouse, 1936</small>, Rudagnostidae <small>Lermontova, 1951</small> }}
'''Agnostidae''' is a family of Agnostida trilobites. Like all Agnostina, they were eyeless and had only two thoracic segments. These trilobites inhabited benthic waters worldwide from 508 to 461 million years ago. The family includes the following genera, among others:<ref>{{cite web |url=http://www.trilobites.info/ordagnostida.htm |title=Order Agnostida |author=S. M. Gon III |accessdate=28 December 2024| archiveurl= https://web.archive.org/web/20241208101608/http://www.trilobites.info/ordagnostida.htm| archivedate= 8 December 2024 | url-status= live}}</ref><ref>{{cite web |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=82583 |title=PBDB: Agnostidae |author=Paleobiology Database |access-date=28 December 2024}}</ref> {{div col|colwidth=21em}} *''Acmarhachis'' *''Agnostus'' *''Aistagnostus'' *''Anglagnostus'' *''Biciragnostus'' *''Connagnostus'' *''Distagnostus'' *''Eolotagnostus'' *''Gymnagnostus'' *''Homagnostus'' *''Idolagnostus'' *''Innitagnostus'' *''Ivshinagnostus'' *''Kymagnostus'' *''Lotagnostus'' *''Micragnostus'' *''Obelagnostus'' *''Oncagnostus'' *''Phalacroma'' *''Phalagnostus'' *''Quadrahomagnostus'' *''Raragnostus'' *''Semagnostus'' *''Strictagnostus'' *''Trilobagnostus'' {{div col end}}
==References== {{Reflist}}
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Category:Agnostidae Category:Agnostoidea Category:Trilobite families Category:Cambrian first appearances Category:Middle Ordovician extinctions
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