Stora Vede (Silurian of Sweden)

Where: Gotland, Sweden (57.6° N, 18.4° E: paleocoordinates 21.6° S, 2.9° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Cyrtograptus rigidus graptolite zone, Unit G Member (Slite Beds Formation), Sheinwoodian (433.4 - 430.5 Ma)

• Kockelella patula and Kockelella walliseri conodont zones

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; limestone 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; "...this unit consists of a carbonate platform with reef mounds and surrounding shoal sediments of mostly pure biodetritic and pleoidal limestones. Here slow and discontinuous accumulation of carbonate material continued in a very shallow water but under normal marine conditions....to the south and southwest the carbonate platform passes with a conspicuous slope into a deeper shelf basin where a uniform alternation of micritic limestones and marls accumulated." Based on information provided in this collection, it is difficult to tell which facies is represented but I have assumed that it represents the deeper facies.

Size classes: macrofossils, mesofossils

Collection methods: Originally lumped: Stora Vede 1, Samsugns 1, and Klints localities; now, it is just Samsugns 1.

Primary reference: G. Lindström. 1884. The Silurian Gastropoda and Pteropoda of Gotland. Kongliga Svenska Vetenskaps-Akademiens Handlingasr 19:1-250 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 181904: authorized by Pete Wagner, entered by Pete Wagner on 07.10.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Trochonematoidea - Lophospiridae
"Murchisonia tortuosa n. sp." = Frodospira tortuosa
"Murchisonia tortuosa n. sp." = Frodospira tortuosa Lindström 1884 snail
 Euomphalina - Elasmonematidae
"Trochus kolmodini n. sp." = Discordichilus kolmodini
"Trochus kolmodini n. sp." = Discordichilus kolmodini Lindström 1884 snail