| Agnostidae Temporal range: Middle Cambrian – Middle Ordovician,
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| Agnostus pisiformis | |
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| Family: | Agnostidae McCoy, 1849
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Micragnostidae Howell, 1935, Glyptagnostidae Whitehouse, 1936, Rudagnostidae Lermontova, 1951 | |
Agnostidae is a family of Agnostida trilobites. Like all Agnostina, they were eyeless and bore only two thoracic segments. They ranged in benthic waters across the globe from 508 to 461 million years ago, containing the following genera, among others:[1][2]
- Acmarhachis
- Agnostus
- Aistagnostus
- Anglagnostus
- Biciragnostus
- Connagnostus
- Distagnostus
- Eolotagnostus
- Gymnagnostus
- Homagnostus
- Idolagnostus
- Innitagnostus
- Ivshinagnostus
- Kymagnostus
- Lotagnostus
- Micragnostus
- Obelagnostus
- Oncagnostus
- Peronopsis
- Phalacroma
- Phalagnostus
- Quadrahomagnostus
- Raragnostus
- Semagnostus
- Strictagnostus
- Trilobagnostus
- ^ S. M. Gon III. "Order Agnostida". Archived from the original on 6 January 2011. Retrieved January 6, 2011.
- ^ Paleobiology Database. "PBDB: Agnostidae". Retrieved December 4, 2011.