Niehugou, Songzhangzi, Lingyuan City (Cretaceous of China)

Where: Liaoning, China (41.2° N, 119.3° E: paleocoordinates 43.8° N, 120.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Yixian Formation, Early/Lower Aptian (125.5 - 122.5 Ma)

• U-Pb dating from the Sihetun area indicates that the Yixian Formation ranges from 124.9 ± 1.7 Ma to 122.8 ± 1.6 Ma (Yang et al., 2007). Chang et al. (2017) obtained Ar/Ar ages of 125.8 ± 1.0 Ma and 126.0 ± 0.8 Ma from the Lujiatun Unit, the lowest part of the Yixian Formation, below the lacustrine shales. It is not clear if the formation is the same age elsewhere, but for now the same age is assigned.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified mudstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: D. Ren. 1995. Insecta. In D. Ren, L.W. Lu, Z.G. Guo, S.A. Ji (eds.), Faunae and stratigraphy of Jurassic-Cretaceous in Beijing and the adjacent areas 47-121 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106966: authorized by Matthew Clapham, entered by Matthew Clapham on 30.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Blattodea - Mesoblattinidae
Karatavoblatta formosa n. sp. Ren 1995 cockroach
 Hymenoptera - Xyelydidae
"Alloxyelula lingyuanensis n. gen. n. sp." = Mesolyda lingyuanensis
"Alloxyelula lingyuanensis n. gen. n. sp." = Mesolyda lingyuanensis Ren 1995 sawfly
 Hymenoptera - Xyelotomidae
Liaotoma linearis n. gen. n. sp.
Liaotoma linearis n. gen. n. sp. Ren 1995 wood wasp
 Mecoptera - Orthophlebiidae
Orthophlebia liaoningensis Ren 1997 scorpionfly