Indian Head Highway, Oxon Hill: Maastrichtian, Maryland
collected by P. M. Kranz 1989
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Mosasauridae
|
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|
Mosasauridae indet.
Gervais 1852
|
1 individual | |||||||||
| USNM 442450 | ||||||||||
|
= Halisaurus platyspondylus
Marsh 1869
|
Holmes and Sues 2000 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Prince Georges |
| Coordinates: | 38.8° North, 77.0° West (view map) | ||||
| Paleocoordinates: | 39.7° North, 52.4° 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: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Severn |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | glauconitic poorly lithified sandstone |
| Includes fossils? | Y |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | rare |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | P. M. Kranz | Collection dates: | 1989 |
Metadata
| Database number: | 99439 | ||
| Authorizer: | M. Carrano | Enterer: | H. Street, M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-11-11 09:12:15 | Last modified: | 2023-06-15 09:59:29 |
| Access level: | the public | Released: | 2010-11-11 09:12:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 85047. | D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast xiii-275 [M. Carrano/M. Carrano] |
Secondary references:
| 34196 | R. B. Holmes and H.-D. Sues. 2000. A partial skeleton of the basal mosasaur Halisaurus platyspondylus from the Severn Formation (Upper Cretaceous: Maastrichtian) of Maryland. Journal of Paleontology 74(2):309-316 [M. Carrano/H. Street] |