Selenosteus brevis is an extinct large selenosteidarthrodireplacoderm known from the FamennianCleveland Shale of Ohio. Scrappy remains from the Frasnian Rhinestreet Shales of Erie County, New York, were attributed by Hussakof and Bryant to this genus in 1919, but, this identification is doubtful.[1] A second species, S. kepleri, was described in 1901, but, not enough differences can be seen between its specimens, and those of the type species to warrant new species status.[1]
According to its generally scrappy fossils, S. brevis had a wide skull with tremendous orbits. And as typical for selenosteids, S. brevis had weak gnathal plates. The median dorsal plate is crescent-shaped, and has a keel. The average length of the skull is about 16 centimetres from the tip of the rostrum to the posterior border of the nuchal plate.
Referencesedit
^ abcdDenison, Robert (1978). Handbook of Paleoichthyology, Volume 2, Placodermi. New York: Gustav Fischer Verlage. p. 98. ISBN9780895740274.
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selenosteus, brevis, extinct, large, selenosteid, arthrodire, placoderm, known, from, famennian, cleveland, shale, ohio, scrappy, remains, from, frasnian, rhinestreet, shales, erie, county, york, were, attributed, hussakof, bryant, this, genus, 1919, this, ide. Selenosteus brevis is an extinct large selenosteid arthrodire placoderm known from the Famennian Cleveland Shale of Ohio Scrappy remains from the Frasnian Rhinestreet Shales of Erie County New York were attributed by Hussakof and Bryant to this genus in 1919 but this identification is doubtful 1 A second species S kepleri was described in 1901 but not enough differences can be seen between its specimens and those of the type species to warrant new species status 1 SelenosteusTemporal range Frasnian 1 to FamennianArtist s reconstructionScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass PlacodermiOrder ArthrodiraSuborder BrachythoraciFamily SelenosteidaeGenus SelenosteusDean 1901Species S brevisBinomial name Selenosteus brevis Claypole 1869 SynonymsTitanichthys brevis Claypole 1869 Selenosteus kepleri Dean 1901 1 According to its generally scrappy fossils S brevis had a wide skull with tremendous orbits And as typical for selenosteids S brevis had weak gnathal plates The median dorsal plate is crescent shaped and has a keel The average length of the skull is about 16 centimetres from the tip of the rostrum to the posterior border of the nuchal plate References edit a b c d Denison Robert 1978 Handbook of Paleoichthyology Volume 2 Placodermi New York Gustav Fischer Verlage p 98 ISBN 9780895740274 nbsp This article about a placoderm is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Selenosteus amp oldid 1193999301, wikipedia, wiki, book, books, library,
