| 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 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:[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.