Pisces Point: Late/Upper Maastrichtian, Canada
collected by Showalter, TMP 2008
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Actinopteri
- Semionotiformes
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Semionotiformes indet.
Arambourg and Bertin 1958
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Murray et al. 2016 | ||||||
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Actinopteri
- Esociformes
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Esociformes indet.
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Murray et al. 2016 | ||||||
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Actinopteri
- Percopsiformes
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Percopsiformes indet.
Berg 1940
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Murray et al. 2016 | ||||||
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Actinopteri
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Osteoglossomorpha indet.
Greenwood et al. 1966
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Murray et al. 2016 | ||||||
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Actinopteri
- Osteoglossiformes
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Wilsonichthys aridinsulensis n. gen., n. sp.
Murray et al. 2016
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Murray et al. 2016 | 2 specimens | |||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 52.0° North, 112.9° West (view map) | ||
| Paleocoordinates: | 59.7° North, 84.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late/Upper Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Scollard | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: about 1–2 m above the base of the formation, just above the Kneehills Tuff in the Battle Formation, dated to 66.5-67Ma from K/Ar by Eberth 1997. | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Secondary lithology: | mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: alternating sandstone and mudstone | |
| Environment: | "channel" |
| Geology comments: The Pisces Point locality is preserved in
a paleochannel composed of alternating sandstone and mudstone layers. These alternating layers are interpreted as the result of periodic alternation between active channel and stagnant waters in the channel (pers. comm., Dave Eberth and Dennis Braman, June 2012). The locality may have been a cut-off ox bow in which flow was seasonal and ponded water was stagnant (pers. comm., Dave Eberth and Dennis Braman, June 2012). Articulated fish are present in both the sandstone and mudstone layers, | |
Taphonomy
| Modes of preservation: | body,replaced with hematite |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | selective quarrying,sieve,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | TMP | ||
| Collectors: | Showalter, TMP | Collection dates: | 2008 |
| Taxonomic list comments:aquatic macrophytes reported present in mudstones | |||
Metadata
| Database number: | 190346 | ||
| Authorizer: | P. Holroyd | Enterer: | P. Holroyd |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2017-12-05 14:08:26 | Last modified: | 2021-09-22 16:00:53 |
| Access level: | the public | Released: | 2017-12-05 14:08:26 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 78157. | D. A. Eberth. 2015. Origins of dinosaur bonebeds in the Cretaceous of Alberta, Canada. Canadian Journal of Earth Sciences 52(8):655-681 [M. Carrano/M. Carrano] |
Secondary references:
| 64014 | A. M. Murray, M. G. Newbrey, A. G. Neuman and D. B. Brinkman. 2016. New articulated osteoglossomorph from Late Cretaceous freshwater deposits (Maastrichtian, Scollard Formation) of Alberta, Canada. Journal of Vertebrate Paleontology 1-14 [P. Holroyd/P. Holroyd/P. Holroyd] |