Duplapex is an extinct genus of bivalved arthropod known from the Cambrian Stage 3 aged Qingjiang biotaofHubei, China, with a single species. D. anima. It is thought to be a close relative of Tuzoia, but unlike it, the reticulated (net patterned) bivalved carapace was interpreted to have opened at a wide angle. The carapace had a pair of spines projecting posteriorly.[1] In its original description, it was suggested to have eyes on annulated stalks, but later research suggested that these may have been preservational artifacts instead.[2]
| Duplapex
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|---|---|
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| Life restoration of Duplapex, based on the original description | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Order: | †Hymenocarina |
| Family: | †Tuzoiidae |
| Genus: | †Duplapex Ma et al. 2021 |
| Species: |
†D. anima
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| Binomial name | |
| †Duplapex anima Ma et al. 2021 | |
InDuplapex, the potential eye peduncles do not bear eyes [28], making their affinity ambiguous. Instead, these structures are most probably compression artefacts on the carapace margins
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