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 | |
Gymnotrachelus hydei Dunkel & Bungart, 1939 |
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.