Echinoids of the Hogklint Group on Gotland (Silurian of Sweden)
Where: Gotland, Sweden (57.5° N, 18.4° E: paleocoordinates 18.4° S, 2.5° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Hogklint Beds Formation, Sheinwoodian (428.2 - 426.2 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; limestone and marl
• Ref. 11073: "Well-sorted biodetritic and crinoidal limestones (grainstones and packstones), often cross-bedded, contain irregularly arranged massive bioherms, which were built up predominately by stromatopores...coarse biodetritic limestones in the vicinity of these reefs grade into inter-reef sediments consisting of limestone-marl alterations."
Primary reference: G. Regnell. 1956. Silurian echinoids from Gotland. Arkiv for Mineralogi och Geology 2(7):155-178 [M. Foote/M. Foote/M. Foote] more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 13718: authorized by Michael Foote, entered by Michael Foote on 22.04.2002