Wialmsudd (Silurian of Sweden)

Where: Gotland, Sweden (57.5° N, 18.6° E: paleocoordinates 24.1° S, 3.1° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Lower Visby Formation, Telychian (438.5 - 433.4 Ma)

• see previous

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone

• see previous

Size class: macrofossils

Preservation: replaced with silica

Collection methods: bulk,

• see previous

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 3976: authorized by Pete Wagner, entered by Pete Wagner on 12.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• see previous
Paragastropoda
 Mimospirida - Onychochilidae
Onychochilus contrarium Lindström 1884
Gastropoda
 Euomphalina - Euomphalidae
Poleumita discors Sowerby 1814 snail
 Euomphalina - Anomphalidae
Pycnomphalus obesus Lindström 1884 snail
originally entered as "Pyncomphalus obesus"
Pycnomphalus acutus Lindström 1884 snail
originally entered as "Pyncomphalus acutus"
 Euomphalina - Oriostomatidae
Oriostoma globosum von Schlotheim 1820 snail
Oriostoma angulatum Wahlenberg 1821 snail
"Oriostoma helcinum" = Morphotropis helicina Lindström 1884 snail
 Bellerophontida - Bellerophontidae
Sphenosphaera eiseni Lindström 1884 snail
 Bellerophontida - Bucaniidae
Bucania squamosus Lindström 1884 snail
Boiotremus longitudinalis Lindström 1884 snail
 Murchisoniina - Luciellidae
"Crenilunula limata" = Prosolarium limata
"Crenilunula limata" = Prosolarium limata Lindström 1884 snail
 Murchisoniina - Gosseletinidae
Spiroraphe shelvensis Pitcher 1939 snail