Also known as Changma

Where: Gansu, China (39.7° N, 96.7° E: paleocoordinates 39.8° N, 93.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Zhonggou Formation (Xinminbao Group), Early/Lower Albian (112.0 - 109.0 Ma)

• 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

• bed-level stratigraphic resolution

Environment/lithology: fluvial; gray, calcareous siltstone

Size class: macrofossils

Preservation: mold/impression, trace

Collected by L. Xing in 2013–2014; reposited in the IVPP

Collection methods: surface (in situ),

Primary reference: L. Xing, D. Marty, H. You, D. Li, H. Klein, D. Knaust, J. Zhang, R. T. McCrea, and W. S. Persons. 2017. Complex in-substrate dinosaur (Sauropoda, Ornithopoda) foot pathways revealed by deep natural track casts from the Lower Cretaceous Xiagou and Zhonggou formations, Gansu Province, China. Ichnos 24(3):163-178 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 220086: authorized by Matthew Carrano, entered by Matthew Carrano on 03.05.2021

Creative Commons license: CC BY (attribution)