Mulde Beds Brachiopods: Homerian, Sweden

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Strophomenida - Leptestiidae
Leangella segmentum (Lindstrom 1861)
recombined as Leangella (Leangella) segmentum
Strophomenata - Strophomenida
Strophochonetes cingulatus (Lindström 1861)
Strophomenata - Strophomenida - Strophochonetidae
Protochonetes minimus (Sowerby 1839)
Strophomenata - Strophomenida - Eopholidostrophiidae
Pholidostrophia (Mesopholidostrophia) fletcheri Davidson 1847
Pholidostrophia (Mesopholidostrophia) laevigata (de Sowerby and Murchison 1839)
recombined as Mesopholidostrophia laevigata
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophia funiclulata
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena depressa (Sowerby 1824)
recombined as Leptaena (Leptaena) depressa
Strophomenata - Strophomenida - Strophonellidae
Strophonella (Strophonella) euglypha (Dalman 1828)
recombined as Strophoprion euglypha
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Trigonirhynchia stricklandii (Sowerby and Murchison 1839)
? Microsphaeridiorhynchus nucula (Sowerby 1839)
Ancillotoechia bidentata (Hisinger 1827)
Rhynchonellata - Rhynchonellida - Machaerariidae
Ferganella borealis (Buch 1834)
recombined as Stegerhynchus borealis
Rhynchonellata - Rhynchonellida - Camarotoechiidae
Plagiorhyncha cordata (Lindström 1861)
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Sphaerirhynchia spp.
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia biloba (Linnaeus 1758)
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina hybrida (Sowerby 1839)
Rhynchonellata - Orthida - Dalmanellidae
Resserella elegantula (Dalman 1828)
Isorthis loveni (Lindström 1861)
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides lewisii (Davidson 1848)
Rhynchonellata - Atrypida - Lissatrypidae
? Lissatrypa sulcata (Lindström 1861)
Rhynchonellata - Atrypida - Atrypidae
Atrypa reticularis (Linnaeus 1758)
original and current combination Anomia reticularis
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula galeata (Dalman 1828)
Rhynchonellata - Pentamerida - Pentameridae
Pentamerus gothlandicus Lebedev 1892
Rhynchonellata - Spiriferida - Cyrtiidae
Cyrtia exporrecta (Wahlenberg 1818)
recombined as Cyrtia exporrectus
Eospirifer radiatus (Sowerby 1834)
Striispirifer plicatellus (Linnaeus 1758)
Rhynchonellata - Spiriferida - Cyrtinopsidae
Kozlowskiellina deltidialis (Hedstrom 1923)
Rhynchonellata - Spiriferida - Delthyrididae
Delthyris elevata Dalman 1828
Howellella cf. subinsignis (Reed 1927)
Howellella elegans Muir-Wood 1925
Rhynchonellata - Athyridida - Athyrididae
Glassina laeviuscula (Sowerby 1839)
? Didymothyris ? didyma (Dalman 1828)
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira pisum (Sowerby 1839)
Rhynchonellata - Athyridida - Meristellidae
Meristina obtusa (Dalman 1828)
Whitfieldella sp. Hall and Clarke 1893
Rhynchonellata - Athyridida - Dayiidae
Protozeuga bicarinata (deVerneuil 1848)
see common names

Geography
Country:Sweden State/province:Gotland
Coordinates: 57.2° North, 18.4° East (view map)
Paleocoordinates:20.1° South, 2.5° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
Stage:Homerian 10 m.y. bin:Silurian 2
*Epoch:Late/Upper Wenlock
Key time interval:Homerian
Age range of interval:430.50000 - 427.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Mulde Beds
Stratigraphic resolution:group of beds
Stratigraphy comments: Correlation from Jeppsson (1983), Fossils and Strata 15:128
Lithology and environment
Primary lithology: argillaceous lime mudstone
Secondary lithology: marl
Lithology description: see geology
Environment:offshore indet. Tectonic setting:cratonic basin
Geology comments: 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; "....series of argillaceous and micritic limestones and marls with a diverse marine fauna but impoverished conodont assemblage deposited in a shelf basin under calm conditions well below wave base."
Taphonomy
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:13529
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-04-12 09:08:09 Last modified:2006-09-15 15:15:11
Access level:the public Released:2002-04-12 09:08:09
Creative Commons license:CC BY
Reference information

Primary reference:

6126. 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]