Douglassville tracksite: Norian, Pennsylvania
collected by S. Silvestri
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Grallatoridae
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Grallator sp.
Hitchcock 1858
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Silvestri and Szajna 1993 | ||||||
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Atreipus milfordensis
(Bock 1952)
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Silvestri and Szajna 1993 | ||||||
| synonym of Grallator tuberosus | |||||||
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Reptilia
- Gwyneddichniidae
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Gwyneddichnium sp.
Bock 1952
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Silvestri and Szajna 1993 | ||||||
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Reptilia
- Chirotheriidae
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Brachychirotherium sp.
Beurlen 1950
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Silvestri and Szajna 1993 | ||||||
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Reptilia
- Batrachopodidae
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Batrachopus sp.
Hitchcock 1845
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Silvestri and Szajna 1993 | ||||||
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Reptilia
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Rhynchosauroides sp.
Maidwell 1911
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Silvestri and Szajna 1993 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Pennsylvania | County: | Berks |
| Coordinates: | 40.3° North, 75.7° West (view map) | ||||
| Paleocoordinates: | 14.8° North, 20.6° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Norian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Norian | ||
| Age range of interval: | 227.00000 - 208.50000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | wave ripples siltstone |
| Secondary lithology: | very fine sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "bedded, oscillatory-rippled siltstones and very fine-grained sandstones with claystone partings" | |
| Environment: | lacustrine indet. |
Taphonomy
| Modes of preservation: | mold/impression,trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | good |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),field collection,observed (not collected) |
| Reason for describing collection: | biostratigraphic analysis |
| Collectors: | S. Silvestri |
Metadata
| Database number: | 84111 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2008-09-17 14:01:28 | Last modified: | 2022-11-04 11:22:42 |
| Access level: | the public | Released: | 2008-09-17 14:01:28 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 83023. | P. E. Olsen. 1989. Stop 5.3: Douglasville footprint quarries. In P. E. Olsen, R. W. Schlische, & P. J. W. Gore (eds.), Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351 79-80 [M. Carrano/M. Carrano] |
Secondary references:
| 28162 | ETE | S. M. Silvestri and M. J. Szajna. 1993. Biostratigraphy of vertebrate footprints in the Late Triassic section of the Newark Basin, Pennsylvania: reassessment of stratigraphic ranges. In S. G. Lucas and M. Morales (eds.), The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3:439-445 [M. Carrano/M. Carrano] |