IVPP 9208-21 quarry, Mazongshan: Early/Lower Albian, China
collected 1992

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Archaeoceratops oshimai n. gen., n. sp. Dong and Azuma 1997
Dong and Azuma 1997 2 individuals
(1 measurement)
Psittacosaurus mazongshanensis n. sp. Xu 1997
Xu 1997 1 individual
nomen dubium belonging to Psittacosaurus
Siluosaurus zhangqiani n. gen., n. sp. Dong 1997
Dong 1997 2 specimens
nomen dubium belonging to Ornithopoda
Probactrosaurus mazongshanensis n. sp. Lü 1997
Lü 1997 19 specimens
recombined as Gongpoquansaurus mazongshanensis
IVPP V.11333 (field no. 9208-21), 11334-1 to 18.
Reptilia - Troodontidae
Sinornithoides sp. Russell and Dong 1994
1 individual
Reptilia - Dromaeosauridae
Dromaeosauridae indet. Colbert and Russell 1969
1 individual
Reptilia
Mesosuchia indet. Huxley 1875
Dong 1997 3 specimens
invalid subgroup of Mesoeucrocodylia
see common names

Geography
Country:China State/province:Gansu County:Subei
Coordinates: 41.6° North, 97.6° East (view map)
Paleocoordinates:41.8° North, 93.9° East
Basis of coordinate:estimated from map
Altitude:1400 meters
Geographic resolution:outcrop
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 Member:Upper Gray Beds
Stratigraphic resolution:group of beds
Stratigraphy comments: unnamed lower part of group; = Xinminpu Group. "middle gray unit" of formation.

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
Size of fossils:macrofossils,mesofossils
Spatial orientation:random
Preservation of anatomical detail:variable
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:frequent
Encrustation:none
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:IVPP
Collection dates:1992
Collection method comments: Collected by the Sino-Japanese Silk Road Dinosaur Expedition.
Metadata
Database number:45166
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2004-10-08 12:22:56 Last modified:2022-02-14 11:34:09
Access level:the public Released:2004-10-08 12:22:56
Creative Commons license:CC BY
Reference information

Primary reference:
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]

Secondary references:

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]
11757ETE Z. Dong. 1997. A small ornithopod from Mazongshan area, Gansu Province, China. In Z. Dong (ed.), Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing 24-26 [M. Carrano/M. Carrano/M. Carrano]
9501 Z. Dong and Y. Azuma. 1997. On a primitive neoceratopsian from the Early Cretaceous of China. In Z. Dong (ed.), Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing 68-89 [M. Carrano/M. Carrano/M. Carrano]
11758ETE J. Lü. 1997. A new Iguanodontidae (Probactrosaurus mazongshanensis sp. nov.) from Mazongshan area, Gansu Province, China. In Z. Dong (ed.), Sino-Japanese Silk Road Dinosaur Expedition. China Ocean Press, Beijing 27-47 [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]
11759ETE X. Xu. 1997. A new psittacosaur (Psittacosaurus mazongshanensis sp. nov.) from Mazongshan area, Gansu Province, China. Sino-Japanese Silk Road Dinosaur Expedition, (Z. Dong (ed.), China Ocean Press, Beijing 48-67 [M. Carrano/M. Carrano/M. Carrano]
70223 H. You, E. M. Morschhauser, D. Li and P. Dodson. 2019. Introducing the Mazongshan Dinosaur Fauna. In H. You, P. Dodson, & E. M. Morschhauser (eds.), Auroraceratops rugosus (Ornithischia, Ceratopsia) from the Early Cretaceous of northwestern Gansu Province, China. Society of Vertebrate Paleontology Memoir 18. Journal of Vertebrate Paleontology 38(supplement):1-11 [M. Carrano/M. Carrano]
9500 H.-L. You and P. Dodson. 2003. Redescription of neoceratopsian dinosaur Archaeoceratops and early evolution of Neoceratopsia. Acta Palaeontologica Polonica 48(2):261-272 [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]