1st & F Streets SE, DC sewer: Late/Upper Aptian, District of Columbia
collected by J. K. Murphy 1898
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Creosaurus potens n. sp.
Lull 1911
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1 specimen | |||||||||
| nomen dubium belonging to Tetanurae | ||||||||||
| USNM 3049; aka "Capitalsaurus" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | District of Columbia |
| Coordinates: | 38.9° North, 77.0° West (view map) | ||
| Paleocoordinates: | 32.8° North, 31.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| 10 m.y. bin: | Cretaceous 2-3 | ||
| Key time interval: | Late/Upper Aptian | ||
| Age range of interval: | 119.50000 - 113.00000 m.y. ago |
Stratigraphy
| Geological group: | Potomac | Formation: | Arundel Clay | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Palynology of the Potomac Group suggests a late Aptian age for the Arundel facies (Brenner, 1963; Doyle and Robbins, 1977; Hochuli et al., 2006; Doyle, 2012) | |||||
Lithology and environment
| Primary lithology: | ferruginous claystone |
| Secondary lithology: | ferruginous conglomerate |
| Includes fossils? | Y |
| Lithology description: "light clays below ferruginous conglomerate" | |
| Environment: | fluvial-lacustrine indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
| Disassociated major elements: | all |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | bulk,salvage,field collection,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | J. K. Murphy | Collection dates: | 28 January 1898 |
Metadata
| Also known as: | Capitalsaurus Court | ||
| Database number: | 52675 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-08-16 11:40:58 | Last modified: | 2023-06-14 15:42:39 |
| Access level: | the public | Released: | 2005-08-16 11:40:58 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14173. | ETE | R. S. Lull. 1911. Systematic paleontology of the Lower Cretaceous deposits of Maryland: Vertebrata. In W. B. Clark, A. B. Bibbins, E. W. Berry, & R. S. Lull (eds.), Lower Cretaceous 183-211 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 10608 | ETE | C. W. Gilmore. 1920. Osteology of the carnivorous Dinosauria in the United States National Museum, with special reference to the genera Antrodemus (Allosaurus) and Ceratosaurus. Bulletin of the United States National Museum 110:1-154 [M. Carrano/M. Carrano/M. Carrano] |
| 78397 | P. Kranz. 1996. Notes on the sedimentary iron ores of Maryland and their dinosaurian fauna. In D. K. Brezinski & J. P. Reger (ed.), Studies in Maryland Geology in Commemoration of the Centennial of the Maryland Geological Survey. Maryland Geological Survey Special Publication 3:87-111 [M. Carrano/M. Carrano/M. Carrano] | |
| 83877 | P. M. Kranz. 1989. Dinosaurs in Maryland. Maryland Geological Survey Educational Series 6:1-34 [M. Carrano/M. Carrano] | |
| 26640 | ETE | P. M. Kranz. 2003. Dinosaurs of the District of Columbia 1-31 [M. Carrano/M. Carrano] |
| 85047 | D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast xiii-275 [M. Carrano/M. Carrano] |