Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W: Wenlock, Wisconsin
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
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Trilobita indet.
Walch 1771
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| trilobite sclerites | ||||||||||
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Polychaeta
- Serpulimorpha
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Serpulimorpha indet.
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| Spirorbids [?????] | ||||||||||
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Polychaeta
- Phyllodocida
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Machaeridia indet.
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena sp.
Dalman 1828
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Strophomenata
- Strophomenida
- Leptestiidae
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Leangella sp.
Opik 1933
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Plectodonta sp.
Kozlowski 1929
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira sp.
Hall 1859
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Eospirifer sp.
Schuchert 1913
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis sp.
Kozlowski 1929
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Resserella sp.
Bancroft 1928
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Dalejina sp.
Havlicek 1953
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia sp.
King 1850
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Rhynchonellata
- Pentamerida
- Clorindidae
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Antirhynchonella sp.
Oehlert 1887
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Rhynchonellata
- Atrypida
- Atrypinidae
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Atrypina sp.
Hall and Clarke 1893
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Crinoidea
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Crinoidea indet.
Miller 1821
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| crinozoan ossicles | ||||||||||
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Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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Anthozoa
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Tabulata indet.
(Milne-Edwards and Haime 1850)
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Demospongiae
- Lithistida
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Lithistida indet.
Schmidt 1870
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Heteractinida
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Heteractinida indet.
Hinde 1888
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Hexactinellida
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Hexactinellida indet.
Schmidt 1870
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Foraminiferida
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Foraminiferida indet.
(Eichwald 1830)
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Chlorophyceae
- Receptaculitidae
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Ischadites tenuis
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unclassified
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Thalassinoides sp.
Ehrenberg 1944
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Palaeophycus sp.
Hall 1847
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Planolites sp.
Nicholson 1873
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Chondrites sp.
von Sternberg 1833
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wisconsin | County: | Milwaukee |
| Coordinates: | 43.0° North, 87.9° West (view map) | ||||
| Paleocoordinates: | 23.6° South, 50.9° West | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Silurian | Epoch: | Wenlock |
| 10 m.y. bin: | Silurian 2 | ||
| Key time interval: | Wenlock | ||
| Age range of interval: | 433.4 - 427.4 m.y. ago |
Stratigraphy
| Formation: | Racine |
Lithology and environment
| Primary lithology: | bioturbation dolomite | ||
| Environment: | offshore shelf | Tectonic setting: | cratonic basin |
| Geology comments: "Bioturbated dolomite mudstone." | |||
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | bulk,chemical,sieve |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:List includes trace fossils as well as body fossils. | |
Metadata
| Database number: | 688 | ||
| Authorizer: | J. Alroy | Enterer: | M. Sommers |
| Modifier: | C. Visaggi | Research group: | marine invertebrate |
| Created: | 1999-02-23 15:38:37 | Last modified: | 2004-03-11 16:25:11 |
| Access level: | the public | Released: | 2000-11-20 13:53:09 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18. | R. Watkins and P. J. Coorough. 1997. Silurian sponge spicules from the Racine Formation, Wisconsin. Journal of Paleontology 71(2):208-214 [J. Alroy/M. Sommers/J. Alroy] |