New Quarry dinosaur tracksite (QM): Cenomanian, Australia
collected 1978
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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Coelurosauria indet.
(Huene 1914)
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1 individual | ||||||
Reptilia
- Avetheropoda
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Carnosauria indet.
Huene 1920
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see common names |
Geography
Country: | Australia | State/province: | Queensland |
Coordinates: | 23.1° South, 142.8° East (view map) | ||
Paleocoordinates: | 52.8° South, 132.7° East | ||
Basis of coordinate: | estimated from map | ||
Altitude: | 226 meters | ||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
Key time interval: | Cenomanian | ||
Age range of interval: | 100.50000 - 93.90000 m.y. ago |
Stratigraphy
Geological group: | Rolling Downs | Formation: | Winton | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: "about the same stratigraphic level as Lark Quarry" with two track-bearing layers. |
Lithology and environment
Primary lithology: | "cross stratification",red poorly lithified sandstone |
Secondary lithology: | planar lamination,red lithified claystone |
Includes fossils? | Y |
Lithology description: "Sediments exposed at Lark Quarry are mainly soft and fine-grained arkosic sandstones of reddish-buff colour. The sandstones for thick beds (each built of innumerable small sets of cross-bedding) and are interlayered with thin and persistent seams of indurated pinkish claystone. The dinosaur tracks are impressed in an 8-10 cm seam of finely laminated claystone that is evidently of lacustrine origin...There are no ripple-marks, rain-prints or sun-cracks, and the dinosaur tracks were impressed in firm moist mud." | |
Environment: | lacustrine indet. |
Geology comments: lacustrine origin. "Sandstones above and below the footprint bed probably resulted from periodic sheet-floods...Shrinkage of the lake had exposed extensive mud-flats marked with narrow run-off channels.". Supposedly a "much-trampled watering-place." |
Taphonomy
Modes of preservation: | mold/impression,trace |
Degree of concentration: | -single event |
Size of fossils: | macrofossils |
Spatial orientation: | life position |
Preservation of anatomical detail: | good |
Associated major elements: | many |
Disassociated major elements: | some |
Fragmentation: | none |
Encrustation: | none |
Temporal resolution: | snapshot |
Spatial resolution: | autochthonous |
Collection methods and comments
Collection methods: | surface (in situ),mechanical,observed (not collected) |
Reason for describing collection: | paleoecologic analysis | Collection dates: | 1978 |
Metadata
Also known as: | Winton | ||
Database number: | 185501 | ||
Authorizer: | M. Carrano | Enterer: | M. Carrano |
Modifier: | G. Varnham | Research group: | vertebrate |
Created: | 2017-04-25 16:08:53 | Last modified: | 2022-05-12 03:15:09 |
Access level: | the public | Released: | 2017-04-25 16:08:53 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
62193. | M. Wade. 1979. Tracking dinosaurs: the WInton excavation. Australian Natural History 19(9):286-291 [M. Carrano/M. Carrano] |
Secondary references:
61634 | R. A. Thulborn and M. Wade. 1984. Dinosaur trackways in the Winton Formation (mid-Cretaceous) of Queensland. Memoirs of the Queensland Museum 21(2):413-517 [M. Carrano/M. Carrano] |