Genus

Pachystrophia Perner, 1903

Selection of related publications

Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346. Valgus.

Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii. pp. 1-521. R. Golike (former Ya. Ionsona).

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.

List of species

1. Pachystrophia devexa (Eichwald, 1860) | Haljala Stage→Keila Stage

2. Pachystrophia dilatata (Koken, 1896) | Kunda Stage

3. Pachystrophia vortex (Eichwald, 1856) | Vormsi Stage

Klassificering

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Subclass	Eogastropoda
Order	Euomphalina
Superfamily	Euomphaloidea
Family	Holopeidae
Genus	Holopea
	Pachystrophia
Species	devexa
	dilatata
	helicoides
	vortex