 | Pachystrophia Perner, 1903 |
Selection of related publications
Rõõmusoks, A. 1970.
Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Eichwald, E. 1861.
Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii.
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.
References based on distribution