Equijubus type, Mazongshan: Early/Lower Albian, China
collected by Chinese Academy 1986

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Iguanodontidae indet. Bonaparte 1850
1 individual
(1 measurement)
    = Equijubus normani n. gen., n. sp. You et al. 2003
You et al. 2003
Angiospermae - Poales - Poaceae
Poaceae indet. Barnhart 1895
Wu et al. 2018
epidermal pieces and phytoliths
see common names

Geography
Country:China State/province:Gansu
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: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 Member:Upper Gray Beds
Stratigraphic resolution:bed
Stratigraphy comments: = Xinminpu Group. "Middle Grey Unit." Previously assigned to Digou Fm.
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:gray "siliciclastic"
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils,microfossils
Preservation of anatomical detail:excellent
Articulated whole bodies:all
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:IVPP
Collectors:Chinese Academy Collection dates:1986
Metadata
Database number:45413
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2004-10-21 13:03:39 Last modified:2022-05-12 04:53:34
Access level:the public Released:2004-10-21 13:03:39
Creative Commons license:CC BY
Reference information

Primary reference:
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]

Secondary references:

50540 K. Carpenter and Y. Ishida. 2010. Early and "middle" Cretaceous iguanodonts in time and space. Journal of Iberian Geology 36(2):145-164 [M. Carrano/M. Carrano]
55898 A. T. McDonald, S. C. R. Maidment, P. M. Barrett, H.-l. You, and P. Dodson. 2014. Osteology of the basal hadrosauroid Equijubus normani (Dinosauria, Ornithopoda) from the Early Cretaceous of China. In D. A. Eberth & D. C. Evans (ed.), Hadrosaurs 44-72 [M. Carrano/M. Carrano]
68330 Y. Wu, H.-L. You, and X.-Q. Li. 2018. Dinosaur-associated Poaceae epidermis and phytoliths from the Early Cretaceous of China. National Science Review 5:721-727 [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]
11829ETE H.-L. You, Z.-X. Luo, N. H. Shubin, L. M. Witmer, Z.-L. Tang and F. Tang. 2003. The earliest-known duck-billed dinosaur from deposits of late Early Cretaceous age in northwest China and hadrosaur evolution. Cretaceous Research 24:348-355 [M. Carrano/M. Carrano/M. Carrano]