Sundre Beds Brachiopods (Silurian of Sweden)

Where: Gotland, Sweden (57.5° N, 18.4° E: paleocoordinates 16.5° S, 2.4° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Sundre Beds Formation, Ludfordian (425.6 - 423.0 Ma)

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

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; reef rocks and shelly/skeletal grainstone

• 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; "...a series of massive bioherms surrounded and covered by detritic and coarse crinoidal limestones (Sundre Beds). To the northeast, these platform deposits are replaced by micritic and argillaceous limestones with back reef character and often with an impoverished benthic fauna."

•I have assumed that these collections are from near Hoburgen and are therefore from the biohermal and crinoidal limestones."

• see geology

Primary reference: M. G. Bassett and L. R. M. Cocks. 1974. A review of Silurian brachiopods from Gotland. Fossils and Strata (3)1-56 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13535: authorized by Michael Foote, entered by Michael Foote on 12.04.2002, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Strophodontidae
Strophodonta (Strophodonta) hoburgensis
 Strophomenida - Leptostrophiidae
Brachyprion sp.
Brachyprion sp. Shaler 1865
 Strophomenida - Rafinesquinidae
Leptaena spp.
Leptaena spp. Dalman 1828
Rhynchonellata
 Orthida - Hesperorthidae
Ptychopleurella bouchardi
 Orthida - Dalmanellidae
"Isorthis canaliculata" = Levenea canaliculata
"Isorthis canaliculata" = Levenea canaliculata Lindström 1861
 Spiriferida - Cyrtiidae
? Striispirifer ? striolatus
? Striispirifer ? striolatus Lindström 1861
 Spiriferida - Delthyrididae
Howellella elegans
Howellella elegans Muir-Wood 1925
 Atrypida - Atrypidae
Atrypa reticularis
Atrypa reticularis Linnaeus 1758
 Atrypida - Atrypinidae
? Spirigerina ? quinquecostata