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Oredezhosteus, a new psammosteid genus (Heterostraci, Psammosteiformes) from the Lower Frasnian (Upper Devonian) of the Main Devonian Field

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Abstract

A new psammosteid, Oredezhosteus kuleshovi gen. et sp. nov., from the Amata Regional Stage (Lower Frasnian) of the Leningrad Region is described. In addition, Psammosteus livonicus Obruchev from beds of the same age from Latvia is included in the new genus. The major diagnostic characters distinguishing Oredezhosteus gen. nov. from Psammosteus Agassiz are the large rounded striated tubercles, which cover more than half width of the branchials, and the long base of the branchial plates.

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References

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Authors and Affiliations

  1. Earth Science Museum, Moscow State University, Moscow, 119899, Russia

    S. V. Moloshnikov

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  1. S. V. Moloshnikov
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Correspondence to S. V. Moloshnikov.

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Original Russian Text © S.V. Moloshnikov, 2009, published in Paleontologicheskii Zhurnal, 2009, No. 2, pp. 76–78.

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Moloshnikov, S.V. Oredezhosteus, a new psammosteid genus (Heterostraci, Psammosteiformes) from the Lower Frasnian (Upper Devonian) of the Main Devonian Field. Paleontol. J. 43, 197–200 (2009). https://doi.org/10.1134/S0031030109020117

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  • DOI: https://doi.org/10.1134/S0031030109020117

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