Section AV4, 126mT, Avalanche Lake: Sheinwoodian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Sphinctozoa
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Sphinctozoa indet.
Steinmann 1882
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| cryptocoeliid(?) sphinctozoan | ||||||||||
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Demospongiae
- Anthaspidellidae
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Anthaspidellidae indet.
Miller 1889
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Patellispongia mackenziensis
Rigby and Chatterton 1999
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Patellispongia alternata
Rigby and Chatterton 1989
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Archaeoscyphia rectilinearis
de Freitas 1989
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Archaeoscyphia alternata
de Freitas 1989
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Archaeoscyphia attenuata
de Freitas 1989
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Archaeoscyphia annulata
(Rigby 1973)
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Archaeoscyphia scalaria
de Freitas 1989
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Demospongiae
- Astylospongiidae
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Astylospongia praemorsa
(Goldfuss 1826)
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Carpospongia castanea
(Roemer 1861)
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Demospongiae
- Spirosclerophorida
- Haplistiidae
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? Haplistion frustrum
Rigby and Chatterton 1989
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Demospongiae
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Belemnospongia epiradiatus n. sp.
Rigby and Chatterton 1999
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Demospongiae
- Streptosclerophorida
- Hindiidae
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Hindia sphaeroidalis
Duncan 1879
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Northwest Territories |
| Coordinates: | 62.4° North, 127.1° West (view map) | ||
| Paleocoordinates: | 6.9° North, 51.6° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Silurian | Epoch: | Wenlock |
| Stage: | Sheinwoodian | 10 m.y. bin: | Silurian 2 |
| Key time interval: | Sheinwoodian | ||
| Age range of interval: | 433.40000 - 430.50000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified lime mudstone |
| Secondary lithology: | lithified wackestone |
| Lithology description: thin-bedded lime mudstones to wackestone | |
| Environment: | offshore indet. |
| Geology comments: Benthic Assemblage 5 | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 121299 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2011-12-02 01:13:33 | Last modified: | 2018-04-26 11:43:27 |
| Access level: | the public | Released: | 2011-12-02 01:13:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 38714. | J. K. Rigby and B. D. E. Chatterton. 1999. Silurian (Wenlock) demosponges from the Avalanche Lake area of the Mackenzie Mountains, southwestern District of Mackenzie, Northwest Territories, Canada. Palaeontographica Canadiana 16:1-43 [W. Kiessling/U. Merkel] |