| Stenosteus Temporal range: Late Devonian: Famennian,
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|---|---|
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| Stenosteus angustopectus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Family: | †Selenosteidae |
| Genus: | †Stenosteus Dean, 1901 |
| Type species | |
| Stenosteus glaber Dean, 1901
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| Species | |
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Stenosteus is an extinct monospecific genus of medium-sized selenosteid arthrodire placoderms of the Late Devonian period known from the Upper Famennian Cleveland Shale of Ohio. Estimated skull lengths range from 6 to 9 centimeters[1] Most fossils of Stenosteus have been scraps of armor and portions of tooth-plates suggestive of Selenosteus. In 1996, enough material of a new species, S. angustopectus, was recovered to allow a reconstruction of armor that resembles that of Selenosteus.[2]
- ^ Denison, Robert (1978). Handbook of Paleoichthyology, Volume 2, Placodermi. New York: Gustav Fischer Verlage. p. 98. ISBN 9780895740274.
- ^ Carr, Robert (February 1996). "Stenosteus augustopectus sp. nov. from the Cleveland Shale (Famennian) of Northern Ohio with a Review of Selenosteid (Placodermi) Systematics". Kirtlandia. 49: 9–43.