| Gymnotrachelus Temporal range: Late Devonian: Famennian,
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| Artist's reconstruction | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Family: | †Selenosteidae |
| Genus: | †Gymnotrachelus Dunkel & Bungart, 1939 |
| Species | |
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Gymnotrachelus is an extinct monospecific genus of large selenosteid arthrodire placoderm of the Late Devonian known from the Late Famennian Cleveland Shale of Ohio.[1] The type species is Gymnotrachelus hydei.[2]
- ^ Denison, Robert (1978). Handbook of Paleoichthyology, Volume 2, Placodermi. New York: Gustav Fischer Verlage. p. 96. ISBN 9780895740274.
- ^ Carr, Robert (1994). "A redescription of Gymnotrachelus hydei (Placodermi : Arthrodira) from the Cleveland Shale (Famennian) of north2 ern Ohio, U. S. A." (PDF). Kirtlandia (48): 3–21.