Nuculoid and Modiomorphid bivalves of the Hemse Beds (Silurian to of Sweden)
Where: Gotland, Sweden (57.5° N, 18.4° E: paleocoordinates 17.1° S, 2.5° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Hemse Beds Formation, Gorstian to Gorstian (427.4 - 423.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; carbonate and marl
• Ref. 11073: "Hemse Beds (90m): In the eastern part of Gotland reef mounds and biodetritic limestones formed a carbonate platform, similar to that of the Klinteberg Beds, but not extending so far to the west....In this area shallow marine carbonate formations make up the majority of the Hemse Beds. The intensively bioturbated, pellet-rich micritic limestones with a restricted marine fauna were probably deposity in a sheltered bay...These are overlain by extensive stromatopore biostromes with abrasion surfaces and intrasilurian sea stacks which show several episodes of erosion and emersion. To the west the carbonate platform borders on a shelf basin area where micritic limestone marl-alternations were deposited. Higher up in the section these "Hemse Marls" expanded to the east and covered the major portion of the area..."
Primary reference: L. Liljedahl. 1994. Silurian nuculoid and modiomorphid bivalves from Sweden. Fossils and Strata (33)1-89 [M. Foote/M. Foote/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 13646: authorized by Michael Foote, entered by Michael Foote on 16.04.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Bivalvia | |
Caesariella lindensis Soot-Ryen 1964 clam
Ekstadia kellyi Liljedahl 1994 clam | |
Nuculites sp.A` Conrad 1841 clam | |
Nuculoidea lens nut clam | |
Modiolopsis alvae, Goniophora onyx, Goniophora acuta, Goniophora trya, Goniophora brimeri, ? Colpomya ? munini, Mimerodonta atlei
Modiolopsis alvae Liljedahl 1994 clam
Goniophora onyx clam
Goniophora acuta clam
Goniophora trya clam
Goniophora brimeri Liljedahl 1994 clam
? Colpomya ? munini Liljedahl 1994 clam
Mimerodonta atlei Liljedahl 1994 clam |