Nanshuangmiao tracksite, Xinzhangzi (Jurassic to of China)

Where: Hebei, China (40.8° N, 117.9° E: paleocoordinates 41.9° N, 120.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Houcheng Formation, Tithonian to Tithonian (152.1 - 139.8 Ma)

• argue against use of Tuchengzi for layer in Hebei prov.; lower part of formation, bracketed by beds dated at 152.57 ± 0.34 Ma and 135 Ma.

• bed-level stratigraphic resolution

Environment/lithology: alluvial fan; coarse-grained sandstone and mudstone

• "steeply dipping coarse fluvial deposits...which represent the distal toe of a large alluvial system that fed into the region from the north"; track layer "probably represents a mud drape on a fluvial gravel bar"
• tracks in mudstone layer; coarse sandstone and conglomerate layers common

Size class: macrofossils

Preservation: cast, trace

Collection methods: quarrying, surface (in situ), peel or thin section,

Primary reference: C. Sullivan, D. W. E. Hone, T. D. Cope, Y. Liu, and J. Liu. 2009. A new occurrence of small theropod tracks in the Houcheng (Tuchengzi) Formation of Hebei Province, China. Vertebrata PalAsiatica 47(1):35-52 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 89053: authorized by Matthew Carrano, entered by Matthew Carrano on 01.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Eubrontidae
"Anchisauripus sp." = Grallator (Eubrontes)
"Anchisauripus sp." = Grallator (Eubrontes) Hitchcock 1845 theropod
probably an oviraptorosaur