Gymnotrachelus
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Gymnotrachelus Temporal range: Late Famennian |
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| Artist's reconstruction | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Placodermi |
| Order: | Arthrodira |
| Suborder: | Brachythoraci |
| Infraorder: | Coccosteina |
| Superfamily: | Dinichthyloidea |
| Family: | Selenosteidae |
| Genus: | Gymnotrachelus |
| Species: | G. hydei |
| Binomial name | |
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Gymnotrachelus hydei Dunkel & Bungart, 1939 |
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Gymnotrachelus hydei is a large selenosteid arthrodire placoderm known from the Late Famennian Cleveland Shales of Ohio. It was originally reconstructed as physically resembling Selenosteus, with slightly smaller orbits (i.e., having a broad, box-like head). Later specimens led to a reappraisal, and now G. hydei is thought to have a more gar-like or barracuda-like build.
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