Panamintaspis snowi is an extinct species of pteraspidid heterostracan agnathan which existed during the early Middle Devonian period of Death Valley, California.[1] Fossils are found in Late Emsian-aged marine strata of the Lost Burro Formation. P. snowi strongly resembles Pteraspis, though while it was originally described as a member of the same family, Pteraspididae,[1] a recent phylogenetic reassessment of the order Pteraspidiformes places P. snowi within the paraphyletic family "Protopeteraspidae," as the sister taxon of the suborder Pteraspidoidei (the super-taxon that contains Pteraspididae together with Protaspididae and Gigantaspis).[2]
| Panamintaspis Temporal range: Late Emsian
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| artist's reconstruction | |
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| Genus: | Panamintaspis Elliot & Ilyes, 1996
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| Species: | P. snowi
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| Binomial name | |
| Panamintaspis snowi Elliot & Ilyes, 1996
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The generic name refers to the Panamint Range in Death Valley where the holotype and other specimens were found. The specific name honors one J. C. Snow, the man who discovered the holotype.[1]
References
edit- ^ a b c Elliott, David K., and Robert R. Ilyes. "New Early Devonian pteraspidids (Agnatha, Heterostraci) from Death Valley National Monument, southeastern California." Journal of Paleontology (1996): 152-161.
- ^ Pernegre, Vincent N., and David K. Elliott. "Phylogeny of the Pteraspidiformes (Heterostraci), Silurian–Devonian jawless vertebrates." Zoologica Scripta 37.4 (2008): 391-403.
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