Black Dam, Cardabia Creek: Albian, Australia
collected by M. Siverson, K. Brimmell, A. Baynes 1994, 1995
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Squalomorphii
- Hexanchidae
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Notorynchus aptiensis
(Pictet 1865)
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| recombined as Gladioserratus aptiensis | ||||||||||
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Chondrichthyes
- Lamniformes
- Odontaspididae
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Carcharias striatula
(Dalinkevičius 1935)
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| recombined as Eostriatolamia striatula | ||||||||||
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Chondrichthyes
- Lamniformes
- Eoptolamnidae
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Leptostyrax sp.
Williston 1900
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Chondrichthyes
- Lamniformes
- Cretoxyrhinidae
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Cretoxyrhinidae indet.
Glückman 1958
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Chondrichthyes
- Lamniformes
- Paraisuridae
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Paraisurus aff. compressus
Sokolov 1978
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Chondrichthyes
- Lamniformes
- Archaeolamnidae
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Archaeolamna sp.
Siverson 1992
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Chondrichthyes
- Lamniformes
- Otodontidae
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Cretolamna sp.
Glikman 1958
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Chondrichthyes
- Lamniformes
- Anacoracidae
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Squalicorax primaevus
(Dalinkevičius 1935)
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Chondrichthyes
- Orectolobiformes
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Orectolobiformes indet.
Applegate 1972
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| said to be a new genus | ||||||||||
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Chondrichthyes
- Synechodontiformes
- Paraorthacodontidae
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Paraorthacodus sp.
Glikman 1957
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| see common names | ||||||||||
Geography
| Country: | Australia | State/province: | Western Australia |
| Coordinates: | 23.1° South, 114.2° East (view map) | ||
| Paleocoordinates: | 47.7° South, 87.2° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Albian | ||
| Age range of interval: | 113.00000 - 100.50000 m.y. ago |
Stratigraphy
| Formation: | Gearle Siltstone | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "middle to late Albian" based on shark fauna and the formation is "late early Albian... very close to its base" | |||||
Lithology and environment
| Primary lithology: | argillaceous siltstone |
| Lithology description: formation consists of "predominantly dark, argillaceous siltstone, grading to silty bentonitic claystone" (either unlithified or poorly lithified) | |
| Environment: | offshore |
| Geology comments: "offshore-marine... inner-shelf... inner to mid-neritic water depths and normal to near-normal oceanic salinity levels" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | salvage,surface (float),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | WAM | ||
| Collectors: | M. Siverson, K. Brimmell, A. Baynes | Collection dates: | 1994, 1995 |
| Collection method comments: Western Australia Museum collection
recovered from sediments that now "make up the walls of the dam" and were excavated during its construction "processing a 5 kg bulk sample did not yield any microscopic teeth" | |||
Metadata
| Database number: | 90688 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | M. Clapham | Research group: | vertebrate |
| Created: | 2009-08-12 17:03:06 | Last modified: | 2020-11-21 22:31:25 |
| Access level: | the public | Released: | 2009-08-12 17:03:06 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 30524. | M. Siverson. 1997. Sharks from the mid-Cretaceous Gearle Siltstone, Southern Carnarvon Basin, Western Australia. Journal of Vertebrate Paleontology 17(3):453-465 [J. Alroy/J. Alroy] |