Carroll Lake, Maquoketa Fm.: Richmondian, Illinois
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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3.2 %-volume | |||||||||
| trilobites | ||||||||||
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Ostracoda
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| 0.05 %-volume | ||||||||||
| ostracodes | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Lepidocyclus sp.
Wang 1949
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3.5 %-volume | |||||||||
| originally entered as "Lepidocyclas sp." | ||||||||||
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Strophomenata
- Strophomenida
- Strophomenidae
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Tetraphalerella sp.
Wang 1949
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30.3 %-volume | |||||||||
| Sepkoski listed both Stroph. and Tetrapalerella on same line; I split abundance% 50-50 | ||||||||||
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Strophomena sp.
Rafinesque and De Blainville 1824
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30.3 %-volume | |||||||||
| Sepkoski listed both Stroph. and Tetrapalerella on same line; I split abundance% 50-50 | ||||||||||
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Stenolaemata
- Trepostomata
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Trepostomata indet.
Ulrich 1882
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4.5 %-volume | |||||||||
| encrusting trepostomes | ||||||||||
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Stenolaemata
- Trepostomata
- Halloporidae
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| 14.2 %-volume | ||||||||||
| originally entered as "? Hallopora sp." | ||||||||||
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Stenolaemata
- Cryptostomata
- Arthrostylidae
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Sceptropora sp.
Ulrich 1888
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2.6 %-volume | |||||||||
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Stenolaemata
- Cryptostomata
- Rhinidictyidae
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Stictopora sp.
Hall 1847
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5.5 %-volume | |||||||||
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Gastropoda
- Murchisoniina
- Eotomariidae
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| 1.6 %-volume | ||||||||||
| originally entered as "? Liospira sp." | ||||||||||
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Bivalvia
- Myalinida
- Ambonychiidae
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? Ambonychia sp.
Hall 1847
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4.2 %-volume | |||||||||
| originally entered as "? Ambonychia sp." | ||||||||||
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Crinoidea
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Crinoidea indet.
Miller 1821
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0.05 %-volume | |||||||||
| pelmatozoans | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Illinois |
| Coordinates: | 42.1° North, 90.1° West (view map) | ||
| Paleocoordinates: | 20.5° South, 114.6° West (Wright 2013) | ||
| Basis of coordinate: | based on political unit |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Late/Upper Ordovician | *Epoch: | Ashgill | *Local age/stage: | Richmondian |
| Key time interval: | Richmondian | ||
| Age range of interval: | 449.6 - 445.5 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Lithology and environment
| Primary lithology: | "limestone" | ||
| Secondary lithology: | "shale" | ||
| Environment: | shallow subtidal indet. | Tectonic setting: | cratonic basin |
| Geology comments: "intercalated thin sh and biomicrite ls. (ecol. succession). shallow shelf (10-50 m); occassional storms. stable craton" | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:"Parker, 1981. Parker Thesis." | |
Metadata
| Database number: | 396 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 1998-12-03 09:57:30 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 1998-12-03 09:57:30 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 61485. | W. C. Parker. 1983. Fossil ecological successions in Paleozoic level bottom brachiopod-bryozoan communities. 1-217 [M. Uhen/J. Ju] |