Top faunal horizon. Denison Range: Maentwrogian, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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? Obulus sp.
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Porifera indet.
Grant 1836
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Agnostida
- Diplagnostidae
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Pseudagnostus sp.
Jaekel 1909
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Pseudagnostus idalis
Opik 1967
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| sub sp. nov denisonensis | ||||||||||
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cf. Pseudagnostus idalis
Opik 1967
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| sub species sagittus | ||||||||||
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Agnostida
- Agnostidae
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Micragnostus sp.1
Howell 1935
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unclassified
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Brachiopoda indet.
Cuvier 1805
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| represents an acrotretid, different than that found in the bottom fauna. | ||||||||||
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Lingulata
- Lingulida
- Obolidae
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? Obolidae indet.
King 1846
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| 2 unassigned species | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Australia | State/province: | Tasmania |
| Coordinates: | 43.0° South, 147.0° East (view map) | ||
| Paleocoordinates: | 43.0° South, 147.0° East | ||
| Geographic resolution: | local area |
Time
| Period: | Cambrian | Epoch: | Furongian |
| Stage: | Paibian | 10 m.y. bin: | Cambrian 5 |
| *Period: | Late/Upper Cambrian | *Epoch: | Early/Lower Merioneth - Middle Merioneth |
| *International age/stage: | Maentwrogian | *Local age/stage: | Idamean Age |
| Key time interval: | Maentwrogian | Trilobite zone: | Proceratopyge cryptica + Stigmatoa diloma |
| Age range of interval: | 497.00000 - 493.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Singing Creek | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Stratigraphically equivalent fossils are found elsewhere in the Adamsfield Trough. | |||||
Lithology and environment
| Primary lithology: | conglomeratic,cherty/siliceous wackestone | ||
| Secondary lithology: | siltstone | ||
| Includes fossils? | Y | ||
| Lithology description: the singing creek formation comprises 720m of quartz wacke turbidites interbedded with fossiliferous siltstone, siliceous conglomerate, and slump sheets. | |||
| Environment: | submarine fan | Tectonic setting: | foreland basin |
Taphonomy
| Modes of preservation: | trace |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | chemical,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: The specimens were collected in 1967 and 1968 by K. D. Corbett and are presently housed in the Geology Department, University of Tasmania (UT). The top faunal horizon has the richest amount of fossils of the three stratigraphic faunal groupings. All of the specimens have undergone tectonic distortion. | |
Metadata
| Also known as: | "top fauna", Singing Creek Formation, Denison Range, Tasmania - Jago 1987 | ||
| Database number: | 8087 | ||
| Authorizer: | M. Patzkowsky | Enterer: | P. Borkow |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2000-06-19 08:15:05 | Last modified: | 2019-10-01 16:12:55 |
| Access level: | the public | Released: | 2000-06-19 08:15:05 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 542. | J. B. Jago. 1987. Idamean (Late Cambrian) trilobites from the Denison Range, south-west Tasmania. Palaeontology 30(2):207-231 [M. Patzkowsky/P. Borkow/J. Alroy] |