Sihetun (STMN coll) (Cretaceous of China)

Also known as Shihetun

Where: Liaoning, China (41.6° N, 120.8° E: paleocoordinates 44.5° N, 122.3° 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: adpression

Collection methods: Repository: Shandong Tianyu Museum of Nature (STMN)

Primary reference: Y. L. Li, J. Chen, and B. Wang. 2018. New Cretaceous palaeontinids (Insecta, Hemiptera) from northeast China. Cretaceous Research 95:130-137 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 198092: authorized by Matthew Clapham, entered by Matthew Clapham on 08.12.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Palaeontinidae
Miracossus gongi n. sp. Li et al. 2018 true bug
STMN48-1001