| Isoxys Temporal range:
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|---|---|
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| Isoxys curvirostratus from the Chengjiang Biota | |
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| Fossil of Isoxys acutangulus from the Burgess Shale | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Order: | †Isoxyida |
| Family: | †Isoxyidae |
| Genus: | †Isoxys Walcott, 1890 |
| Species | |
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See text | |
Isoxys (meaning "equal surfaces") is a genus of extinct bivalved Cambrian arthropod; the various species of which are thought to have been freely swimming predators.[1] It had a pair of large spherical eyes (which are the most commonly preserved feature of the soft-bodied anatomy),[2] and two large frontal appendages used to grasp prey.[1]
- ^ a b Vannier, J.; Garcia-Bellido, C.; Hu, X.; Chen, L. (Jul 2009). "Arthropod visual predators in the early pelagic ecosystem: evidence from the Burgess Shale and Chengjiang biotas". Proceedings: Biological Sciences. 276 (1667): 2567–2574. doi:10.1098/rspb.2009.0361. ISSN 0962-8452. PMC 2686666. PMID 19403536.
- ^ García-Bellido, D.; Vannier, J.; Collins, D. (2009). "Soft-part preservation in two species of the arthropod Isoxys from the middle Cambrian Burgess Shale of British Columbia, Canada" (PDF). Acta Palaeontologica Polonica. 54 (4): 699. doi:10.4202/app.2009.0024. S2CID 53613716.