MPM 3956, Marmarth: Maastrichtian, North Dakota
collected 1987
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Stygimoloch spinifer
Galton and Sues 1983
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1 specimen | |||||||||
| synonym of Pachycephalosaurus wyomingensis | ||||||||||
| MPM 8111 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Slope |
| Coordinates: | 46.3° North, 103.9° West (view map) | ||||
| Paleocoordinates: | 52.7° North, 76.7° West | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 854 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Hell Creek | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: within upper third of the 70-90 m thick outcrops of Hell Creek Fm. | |||||
Lithology and environment
| Primary lithology: | tabular,"cross stratification" sandstone |
| Secondary lithology: | fine,concretionary,ferruginous siltstone |
| Includes fossils? | Y |
| Lithology description: "thick (> 6 meters), cross-stratified sandstones contacted above and below by fine-grained siltstones with abundant ironstone concretions." (matrix on specimen is sandstone) | |
| Environment: | channel lag |
| Geology comments: "a point bar lithofacies" | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Disassociated major elements: | all |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (float),mechanical,field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1987 |
Metadata
| Database number: | 48843 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-03-31 07:52:41 | Last modified: | 2010-12-02 20:41:35 |
| Access level: | the public | Released: | 2005-03-31 07:52:41 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17021. | ETE | M. B. Goodwin and R. E. Johnson. 1995. A new skull of the pachycephalosaur Stygimoloch casts doubt on head butting behavior. Journal of Vertebrate Paleontology 15(3, suppl.):32A [M. Carrano/M. Carrano] |
Secondary references:
| 13015 | ETE | M. B. Goodwin, E. A. Buccholtz, and R. E. Johnson. 1998. Cranial anatomy and diagnosis of Stygimoloch spinifer (Ornithischia: Pachycephalosauria) with comments on cranial display structures in agonistic behavior. Journal of Vertebrate Paleontology 18(2):363-375 [M. Carrano/M. Carrano/M. Carrano] |