Mollusca
Genus

Ischyrinia Billings, 1866

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Selection of related publications
Ebbestad, J. O. R., Rhebergen, F., Gubanov, A. P. 2017. Late Ordovician rostroconchs (Mollusca) from fluvial erratics in northwestern Europe. Bulletin of Geosciences 92, 4, 405-438. DOI:10.3140/bull.geosci.1675
Pojeta, J., Runnegar, B. 1976. The paleontology of rostroconch mollusks and the early history of the phylum Mollusca. Geological Survey of Finland. Professional Paper 968, 1-85.
Eichwald, E. 1856. Beitrag zur geographischen Verbreitung der fossilen Thiere Russlands. Alte Periode. (Fortsetzung. S. Bulletin 1856. N 2. pag. 406.). Bulletin of the Moscow Society of Naturalists. Geological series 29, IV, 555-608.
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References based on distribution