Ntumbe area tracksite 2, Chewore: Middle Jurassic - Late/Upper Jurassic, Zimbabwe
collected by Ahmed & Mukandi 2001
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Eubrontes sp.
Hitchcock 1845
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6 specimens | ||||||
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= Theropoda indet.
Marsh 1881
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Lingham-Soliar et al. 2003 | ||||||
| see common names | |||||||
Geography
| Country: | Zimbabwe | State/province: | Mashonaland West | County: | Hurungwe |
| Coordinates: | 16.2° South, 30.0° East (view map) | ||||
| Paleocoordinates: | 30.4° South, 4.2° East | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic |
| Key time interval: | Middle Jurassic - Late/Upper Jurassic |
| Age range of interval: | 174.70000 - 145.00000 m.y. ago |
Stratigraphy
| Formation: | Dande Sandstone |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | desiccation cracks,current ripples,wave ripples,micaceous silty sandstone |
| Secondary lithology: | mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "bituminous midstones that indicate a shallow-water lake (or quiet overbank) sub-environment where crusts of gypsum and possibly halite reflect periodic aridity. Ripple marks and dessication features on alternate beds, and sometimes on the same bed, show that periodic precipitation occurred in this semi-arid to arid environment...The footprints are preserved in a rapidly drying silty sand (indicated by dessication cracks and ripples) and infilled by a softer, more erodible muddy sediment." | |
| Environment: | dry floodplain |
| Geology comments: " The dinosaur footprints were preserved in an overbank adjacent to the river channel in which sediment accumulated during flooding." | |
Taphonomy
| Modes of preservation: | trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | medium |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),observed (not collected) | ||
| Reason for describing collection: | paleoecologic analysis | ||
| Collectors: | Ahmed & Mukandi | Collection dates: | 2001 |
Metadata
| Also known as: | Chiwore, Six-Footprint Site | ||
| Database number: | 39657 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2004-06-02 07:50:31 | Last modified: | 2023-08-07 14:06:47 |
| Access level: | the public | Released: | 2004-06-02 07:50:31 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 33394. | ETE | A. Ait-Kaci Ahmed and M. A. Mukandi. 2001. A survey of the new dinosaur footprint sites in the vicinity of the Ntmbe River, Chewore Safari Area. Zimbabwe Geological Survey, Harare 1-5 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 10740 | ETE | T. Lingham-Soliar, T. Broderick, and A. A. K. Ahmed. 2003. Closely associated theropod trackways from the Jurassic of Zimbabwe. Naturwissenschaften 90:572-576 [M. Carrano/M. Carrano/M. Carrano] |