Guojiadian, Chaoyang County (Jurassic to of China)

Where: Hebei, China (40.9° N, 119.3° E: paleocoordinates 42.5° N, 122.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Guojiadian Formation, Callovian to Callovian (166.1 - 157.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified shale

• Basins characterized by flexure and early rifting (Li et al., 2004).

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collection methods: Repository: North China Institute of Geological Sciences

Primary reference: W. L. Wang. 1980. Insecta. Paleontological Atlas of Northeast China. II. Mesozoic and Cenozoic 130-153 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113474: authorized by Matthew Clapham, entered by Matthew Clapham on 31.07.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• I assume the occurrence mentioned by Hong (1983) and later reidentified is the same specimen as illustrated in Wang (1980), even though it is not included in the synonymy list (Hong includes other occurrences that are clearly the same as in the Paleontological Atlas).
Show authors, comments, and common names
Insecta
 Ephemeroptera - Siphlonuridae
Mesobaetis sanjianfangensis
Mesobaetis sanjianfangensis Hong 1995 mayfly
L9005