Family
Agnostidae McCoy, 1849
List of species
1. Agnostus pisiformis (Wahlenberg, 1818) | Cambrian
2. Homagnostus obesus (Belt, 1867) | Furongian
4. Lotagnostus americanus (Billings, 1860) | Furongian
5. Lotagnostus subtrisectus Westergård, 1944 | Furongian
6. Trilobagnostus holmi (Westergård, 1922) | Furongian
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Klassificering
| Organism group | Biota |
| Domain | Eukaryota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Order | Agnostida |
| Suborder | Agnostina |
| Family | Agnostidae |
| Genus | Agnostus |
| Homagnostus | |
| Lotagnostus | |
| Trilobagnostus | |
| Family | Metagnostidae |
| Peronopsidae | |
| Genus | Glaberagnostus |