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Gymnotrachelus

Gymnotrachelus
Temporal range: Late Famennian
Gymnotrachelus hydei.jpg
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.



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Wikipedia

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