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