IVPP 9208-25, Mazongshan: Early/Lower Albian, China
collected 1992
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Theropoda
- Dromaeosauridae
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Dromaeosauridae indet.
Colbert and Russell 1969
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Dong 1997 | 1 specimen | |||||
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Reptilia
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Mesosuchia indet.
Huxley 1875
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3 specimens | ||||||
| invalid subgroup of Mesoeucrocodylia | |||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Gansu |
| Coordinates: | 41.5° North, 97.6° East (view map) | ||
| Paleocoordinates: | 41.7° North, 93.9° East | ||
| Basis of coordinate: | estimated from map | ||
| Altitude: | 1400 meters | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Early/Lower Albian | ||
| Age range of interval: | 113.00000 - 109.90000 m.y. ago |
Stratigraphy
| Geological group: | Xinminbao | Formation: | Zhonggou | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: unnamed lower part of group; = Xinminpu Group
Zhang et al. 2015: The palynomorph assemblages contain a large number of biostratigraphically significant palynomorphs, such as numerically abundant tricolpate and rare polyaperturate angiosperm pollen grains, which indicate an Early Albian age for the Zhonggou Formation | |||||
Lithology and environment
| Primary lithology: | fine,gray,red sandstone |
| Includes fossils? | Y |
| Lithology description: "red-gray fine-grained sediments" | |
| Environment: | fluvial-lacustrine indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | mesofossils |
| Preservation of anatomical detail: | good |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1992 |
Metadata
| Database number: | 45170 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2004-10-08 14:08:15 | Last modified: | 2022-02-14 11:34:39 |
| Access level: | the public | Released: | 2004-10-08 14:08:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11761. | Z. Dong. 1997. On the crocodiles from the Mazongshan area, Gansu Province, China. In Z. Dong (ed.), Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing 11-12 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 11755 | ETE | Z. Dong. 1997. On small theropods from Mazongshan area, Gansu Province, China. In Z. Dong (ed.), Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing 13-18 [M. Carrano/M. Carrano/M. Carrano] |
| 11827 | F. Tang, Z.-X. Luo, Z. Zhou, H.-L. You, J. A. Georgi, Z.-L. Tang, and X.-L. Wang. 2001. Biostratigraphy and palaeoenvironment of the dinosaur-bearing sediments in Lower Cretaceous of Mazongshan area, Gansu Province, China. Cretaceous Research 22(1):115-129 [M. Carrano/M. Carrano/M. Carrano] | |
| 79839 | M. Zhang, L. Ji, B. Du, S. Dai, and X. Hou. 2015. Palynology of the Early Cretaceous Hanxia Section in the Jiuquan Basin, Northwest China: The discovery of diverse early angiosperm pollen and paleoclimatic significance. Palaeogeography, Palaeoclimatology, Palaeoecology 440:297-306 [P. Mannion/G. Varnham/G. Varnham] |