Samsugns 1, in Othem, 4180 m east southeast of Tingstäde Church (Silurian of Sweden)

Also known as Includes Stora Vede 1, Samsugns 1, and Klints localities.Oncocerid cephalopods of Slite Beds, unit g

Where: Gotland, Sweden (57.8° N, 18.7° E: paleocoordinates 21.4° S, 2.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Ryssnäs Member (Slite Beds Formation), Sheinwoodian (433.4 - 430.5 Ma)

• = Slite Beds, unit g

• 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.

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

Primary reference: S. Stridsberg. 1985. Silurian oncocerid cephalopods from Gotland. Fossils and Strata (18)1-65 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13633: authorized by Michael Foote, entered by Michael Foote on 16.04.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Oncocerida - Trimeroceratidae
 Oncocerida - Hemiphragmoceratidae
Paragastropoda
 Mimospirida - Clisospiridae
"? Onychochilus cochleatum" = Mimospira cochleata1
"? Onychochilus cochleatum" = Mimospira cochleata1 Lindström 1884
 Mimospirida - Onychochilidae
? Onychochilus contrarium1 Lindström 1884
Gastropoda
 Euomphalina - Oriostomatidae
Oriostoma globosum1 von Schlotheim 1820 snail
Oriostoma globosum sculptum
Oriostoma angulatum1 Wahlenberg 1821 snail
"Oriostoma helicinum" = Morphotropis helicina1 Lindström 1884 snail
 Euomphalina - Euomphalidae
"Trochus lundgreni" = Hystricoceras lundgreni1
"Trochus lundgreni" = Hystricoceras lundgreni1 Lindström 1884 snail
 Bellerophontida - Bucaniidae
Megalomphala wilfredi2 Peel 1991 snail
Bucania stephnae n. sp.2 Peel 1991 snail
 Murchisoniina - Murchisoniidae
"Loxonema attenuatum n. sp." = Morania attenuatum1, Murchisonia obtusangula1
"Loxonema attenuatum n. sp." = Morania attenuatum1 Lindström 1884 snail
Murchisonia obtusangula1 Lindström 1884 snail