Lower Visby Beds Tentaculitids (Silurian to of Sweden)

Where: Gotland, Sweden (57.6° N, 18.3° E: paleocoordinates 23.5° S, 3.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Lower Visby Beds Formation, Telychian to Telychian (438.5 - 430.5 Ma)

• Correlation from Jeppsson (1983), Fossils and Strata 15:128

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lime mudstone and marl

• SEP: Silurian of Gotland has been variably described as a ramp and platform. Based on my read of the literature, I think if falls best into the ramp category. From Samtleben et al. (1996). Geol. Rundsch 85:278-292; "The Lower Visby Beds consist of micritic limestones and marls, without transported and sorted detrital material, accumulated well below the wave base and photic zone; only weak water movements touched the bottom."
• see geology

Primary reference: K. Larsson. 1979. Silurian tentaculitids from Gotland and Scania. Fossils and Strata 11:1-180 [M. Foote/M. Foote/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13536: authorized by Michael Foote, entered by Michael Foote on 12.04.2002, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Cheiruridae
Sphaerexochus spp. Beyrich 1845 trilobite
Lophophorata
 Tentaculitida - Tentaculitidae
 Tentaculitida - Gotlandellitidae