MDM Quarry 18, North Cox pit: Early/Lower Campanian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Mosasauridae
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Hainosaurus pembinensis n. sp.
Nicholls 1988
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1 specimen | |||||||||
| recombined as Tylosaurus pembinensis | ||||||||||
| incomplee skull and mandible, left humerus, right femur, articulated vertebral column lacking the first two, and possibly the third, cervical vertebrae | ||||||||||
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Plioplatecarpus nichollsae
Cuthbertson et al. 2007
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Komishi and Caldwell 2009 | 1 specimen | ||||||||
| recombined as Latoplatecarpus nichollsae | ||||||||||
| M 83.10.18, isolated partial skull elements and right humerus | ||||||||||
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Reptilia
- Testudines
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cf. Chelonioidea indet.
Baur 1893
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Nicholls et al. 1990 | 1 specimen | ||||||||
| Family, genus, species indet. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Manitoba |
| Coordinates: | 49.3° North, 98.3° West (view map) | ||
| Paleocoordinates: | 53.7° North, 63.2° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Middle Senonian |
| *International age/stage: | Early/Lower Campanian | *Local age/stage: | Pierre |
| Key time interval: | Early/Lower Campanian | Ammonoid zone: | Baculites obtusus |
| Age range of interval: | 83.60000 - 72.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Montana | Formation: | Pierre Shale | Member: | Pembina |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: correlated with Sharon Springs Member in South Dakota and Wyoming by Gill and Cobban (1965) and McNeil and Caldwell (1981) | |||||
Lithology and environment
| Primary lithology: | bentonitic,black carbonaceous "shale" |
| Includes fossils? | Y |
| Lithology description: The lower unit of the Pembina Formation, from which the fossils were collected, is a distinctive series of black, carbonaceous shales interbedded with seams of bentonite. | |
| Environment: | offshore indet. |
| Geology comments: Pembina was deposited in quiet water well below wave base, probably well removed from contemporary shores, but gypsum damage obscures evidence. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 23366 | ||
| Authorizer: | J. Alroy, M. Carrano | Enterer: | J. Wertheim, H. Street, E. Leckey |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2002-07-12 15:59:35 | Last modified: | 2012-01-31 17:00:44 |
| Access level: | the public | Released: | 2002-07-12 15:59:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 9846. | E. L. Nicholls. 1988. The first record of the mosasaur Hainosaurus (Reptilia: Lacertilia) from North America. Canadian Journal of Earth Sciences 25:1564-1570 [J. Alroy/E. Leckey/M. Uhen] |
Secondary references:
| 32896 | T. S. Bullard and M. W. Caldwell. 2010. Redescription and rediagnosis of the tylosaurine mosasaur Hainosaurus pembinensis Nicholls, 1988, as Tylosaurus pembinensis (Nicholls, 1988). Journal of Vertebrate Paleontology 30(2):416-426 [M. Carrano/H. Street] | |
| 32947 | T. Komishi and M. W. Caldwell. 2009. New material of the mosasaur Plioplatecarpus nichollsae Cuthbertson et al., 2007, clarifies problematic features of the holotype specimen. Journal of Vertebrate Paleontology 29(2):417-436 [M. Carrano/H. Street/F. Aspromonte] | |
| 735 | 5% 19560 | E. L. Nicholls, T. T. Tokaryk, and L. V. Hills. 1990. Cretaceous marine turtles from the Western Interior Seaway of Canada. Canadian Journal of Earth Sciences 27(10):1288-1298 [J. Alroy/M. Sommers/J. Alroy] |