Duanjiagou, Xidayingzi Village (Cretaceous to of China)

Also known as Ningchengodon foxi locality; Bisiyingzi

Where: Liaoning, China (41.4° N, 119.1° E)

• Paleocoordinates: 40.5° N, 128.9° E (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Lujiatun Member (Yixian Formation), Late/Upper Barremian to Late/Upper Barremian (130.0 - 122.5 Ma)

• radiometric dating of main fossiliferous tuff (40Ar/39AR) = 123.2 ± 1.0 Ma

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; pebbly, volcaniclastic, brown, red, silty, sandy mudstone and tuff

• interpreted as a lahar, but host setting not described (other than low-slope, some distance from volcano)
• The lithology of this section is a set of volcanic rocks interbedded with sedimentary rocks, with a total thickness of about 80 meters. The volcanic rocks are mainly basaltic andesite, rhyolitic breccia lava and andesitic tuff, and the sedimentary rocks are mainly gravel-bearing tuffaceous siltstone, tuffaceous sandstone and conglomerate with volcanic and igneous fragments. The lithologic assemblage and the sequence of this site are similar to those of the Lujiatun Unit of the Yixian Formation at Beipiao, except that the bottom of the sequence of this new site is a set of acidic volcanic rocks (Jiang et al. 2014; Rogers et al. 2015).

Size class: macrofossils

• Ningchengodon foxi dentary, Titanosauriformes teeth, Sinovenator-like troodontid, Euhelopus-like sauropod, neornithischian Jeholosaurus, ceratopsian Psittacosaurus.

Reposited in the IVPP

Collection methods: quarrying, surface (in situ), mechanical,

• PMOL, Paleontological Museum of Liaoning, Shenyang Normal University, Shenyang, China

Primary reference: H. Zhang, D. Yu, Y. Feng, R. Pei, and C.-F. Zhou. 2022. A Lujiatun-like dinosaurian assemblage from the Jehol Biota of Ningcheng, Inner Mongolia, Northeast China. Acta Paleontologica Polonica 67(3):617-621 [E. Vlachos/F. Aspromonte]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 235272: authorized by Evangelos Vlachos, entered by Franco Aspromonte on 24.06.2024

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Theriamorpha - Zhangheotheriidae
Ningchengodon foxi n. gen. n. sp.2
Ningchengodon foxi n. gen. n. sp.2 Zhang et al. 2024 mammal
PMOL-AM00036, dentary
Reptilia
 Eosuchia -
Lepidosauria indet.
Lepidosauria indet. lepidosaur
PMOL-AR00268, fragmentary mandible
 Saurischia -
Titanosauriformes indet.1
Titanosauriformes indet.1 Salgado et al. 1997 sauropod
SDUST-V1064, PMOL-AD00176, PMOL-ADt000, teeth
 Theropoda - Troodontidae
? Sinovenator sp.
? Sinovenator sp. Xu et al. 2002 maniraptoran
SDUST-V1062, articulated postcranial skeleton
 Ornithischia -
? Psittacosaurus sp.
? Psittacosaurus sp. Osborn 1923 ceratopsian
PMOLAD00163-AD00168
 Neornithischia - Jeholosauridae
? Jeholosaurus sp.
? Jeholosaurus sp. Xu et al. 2000 ornithischian
PMOL-AD00169 and AD00170; SDUST-V1064 and V1065
1Zhang et al. 2024; 2Zhang et al. 2024