Ibex region, House Fm., Ordovician (Tremadoc) zones b & c: Tremadoc, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pterobranchia
- Dendroidea
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Dendroidea indet.
Nicholson 1872
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Gastropoda
- Euomphalina
- Ophiletidae
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Ophileta sp.
Vanuxem 1842
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Rhynchonellata
- Orthida
- Eoorthidae
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Apheoorthis sp.
Ulrich and Cooper 1936
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Rhynchonellata
- Orthida
- Plectorthidae
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Nanorthis sp.
Ulrich and Cooper 1936
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Rhynchonellata
- Pentamerida
- Clarkellidae
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Syntrophina sp.
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Lingulata
- Acrotretida
- Acrotretidae
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Eurytreta sp.
Rowell 1966
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Trilobita
- Proetida
- Hystricuridae
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Hystricurus sp.
Raymond 1913
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Trilobita
- Asaphida
- Nileidae
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Symphysurina sp.
Ulrich 1924
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Trilobita
- Asaphida
- Asaphidae
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Bellefontia sp.
Walcott 1924
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Trilobita
- Ptychopariida
- Kingstoniidae
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Clelandia sp.
Cossman 1902
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah |
| Coordinates: | 38.9° North, 113.4° West (view map) | ||
| Paleocoordinates: | 6.5° South, 85.2° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | basin |
Time
| 10 m.y. bin: | Cambrian-Ordovician | ||
| *Period: | Ordovician | *Epoch: | Tremadoc |
| Key time interval: | Tremadoc | ||
| Age range of interval: | 485 - 477.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | House | ||||
| Stratigraphy comments: "Tremadoc, Zones B and C" |
Lithology and environment
| Primary lithology: | cherty/siliceous "limestone" |
| Environment: | marine indet. |
| Geology comments: "thin-bedded ledge and slope forming ls. (siliceous calcilutite and calcisiltite) thin beds of calcarenite, some wavy bedding surfaces, no stromatolites" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Taxonomic list comments:"Hintze et al. [1968 or 1972???, sic] Proc. IPU, XXIII Int'l Geol Cong., pp385-400" | |
Metadata
| Database number: | 276 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | J. Ju | Research group: | marine invertebrate |
| Created: | 1998-11-20 10:07:18 | Last modified: | 2017-01-02 05:21:16 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 61236. | L. F. Hintze, L. F. Braithwaite, D. L. Clark, R. L. Ethington, and R. F. Flower. 1972. A fossiliferous Lower Ordovician reference section from western United States. Polish Geological Institute; International Geological Congress, 23rd Session, Czechoslovakia, 1968 [M. Uhen/J. Ju/J. Ju] |