Amphiplaga
| Amphiplaga Temporal range:
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|---|---|
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| Fossil specimen, Natural History Museum of Utah | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Percopsiformes |
| Family: | Percopsidae |
| Genus: | †Amphiplaga Cope, 1877 |
| Species: | †A. brachyptera
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| Binomial name | |
| †Amphiplaga brachyptera Cope, 1877
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Amphiplaga is an extinct genus of freshwater ray-finned fish from the Early Eocene of North America. It was a percopsid closely related to the modern trout-perch.[1][2][3]
It contains a single species, A. brachyptera from the Fossil Lake deposits of the Green River Formation in Wyoming, US. It is one of two percopsids known from the Green River Formation, the other being Erismatopterus which is known from the other two lake deposits comprising the formation. It can be distinguished from Erismatopterus by the three hard spines on its dorsal fin rays, and its larger body size. The species Erismatopterus endlicheri is thought to be synonymous with Amphiplaga.[4]
References
[edit]- ^ "PBDB Taxon". paleobiodb.org. Archived from the original on 2025-06-14. Retrieved 2026-06-13.
- ^ Murray, Alison M.; Brinkman, Donald B.; Newbrey, Michael G.; Neuman, Andrew G. (2020). "Earliest North American articulated freshwater acanthomorph fish (Teleostei: Percopsiformes) from Upper Cretaceous deposits of Alberta, Canada". Geological Magazine. 157 (7): 1087–1096. doi:10.1017/S0016756819001328. ISSN 0016-7568.
- ^ Brownstein, Chase D; Policarpo, Maxime; Harrington, Richard C; Hoffman, Eva A; Stokes, Maya F; Casane, Didier; Near, Thomas J (2025-07-30). Li, Haipeng (ed.). "Convergent Evolution in Amblyopsid Cavefishes and the Age of Eastern North American Subterranean Ecosystems". Molecular Biology and Evolution. 42 (8). doi:10.1093/molbev/msaf185. ISSN 0737-4038. PMC 12375919. PMID 40852875.
- ^ Dayvault, Richard D.; Bersch, Melvin R. (1983-09-01). "Fossil Fish From the Eocene Green River Formation Near Kemmerer, Wyoming". Rocks & Minerals. 58 (5): 223–236. doi:10.1080/00357529.1983.11768479. ISSN 0035-7529.