Beyrichienkalk Formation

Beyrichienkalk Formation
Stratigraphic range: Pridoli ~423–420 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Limestone
Location
Coordinates	50°00′N 10°42′E / 50.0°N 10.7°E / 50.0; 10.7
Approximate paleocoordinates	14°48′S 1°48′W / 14.8°S 1.8°W / -14.8; -1.8
Region	Gotland Ex situ:[clarification needed] Brandenburg, Kuyavia-Pomerania, Mecklenburg-Western Pomerania, West Pomerania
Country	Sweden Ex situ: Germany Ex situ: Poland
Type section
Named for	Nodibeyrichia
Beyrichienkalk Formation (Baltic Sea)

The Beyrichienkalk Formation is a geologic formation in Gotland, Sweden. It preserves fossils dating back to the Silurian period.^[1] The formation is represented in erratic boulders found in:

• Oderberg, Brandenburg, Germany
• Voigtsdorf, Mecklenburg-Western Pomerania, Germany
• Międzyzdroje, West Pomerania, Poland
• Orłowo, Poland
• Vistula River, Bydgoszcz, Kuyavia-Pomerania, Poland

The following fossils have been reported from the formation:^[1]

Cephalopods

• Spyroceras damesi^[2]

• Dzik, J.; Kiselev, G. N. (1995), "The Baltic nautiloids Cyrtoceras ellipticum Lossen 1860, C. priscum Eichwald 1861, and Orthoceras damesi Krause 1877", Paläontologische Zeitschrift, 69 (1–2): 61–71, Bibcode:1995PalZ...69...61D, doi:10.1007/BF02985974

• 2010 - Schallreuter and Hinz-Schallreuter - Die Nodibeyrichien des Beyrichienkalkes (The Nodibeyrichians of the Beyrichia Limestone) - Geschiebekunde aktuell 26 (4): 119–134, 8 Abb., 1 Tab. Hamburg/Greifswald November 2010 ISSN 0178-1731