Maershan, Laiyang (Tianjin Institute Collection) (Cretaceous of China)

Where: Shandong, China (37.0° N, 120.9° E: paleocoordinates 40.5° N, 122.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 3 Member (Laiyang Formation), Aptian (125.0 - 113.0 Ma)

Environment/lithology: lacustrine - large; lithified, gray, yellow siltstone

• Large (several hundred km2) lake in the Laiyang basin. In addition to the abundant entomofauna, plant fossil fragments, fish and a single bird feather also have been found. Water plants were apparently rare, and at the centre of the lake I have found no plant or animal fossils.
• The Third Member of the Laiyang Formation consists of 250-705 m of calcareous sandstone, siltstone and fine-granted sandstone intercalated with thin, paper-like, insect-rich shales.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected in 1964

• Repository: Tianjin Institute of Geology and Mineral Resources

Primary reference: Y. C. Hong. 1984. New fossil insects of Laiyang Group from Laiyang basin, Shandong Province. Professional Papers of Stratigraphy and Palaeontology 11:31-41 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 156555: authorized by Matthew Clapham, entered by Matthew Clapham on 24.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Diptera - Chaoboridae
Chironomaptera gregaria
Chironomaptera gregaria Grabau 1923 phantom midge
 Blattodea -
Sinoblatta laiyangensis
Sinoblatta laiyangensis Grabau 1923 cockroach
 Coleoptera - Coptoclavidae
Coptoclava longipoda
Coptoclava longipoda Ping 1928 beetle
 Hemiptera - Saldidae
"Jiaodongia maershanensis n. gen. n. sp." = Mesolygaeus laiyangensis
"Jiaodongia maershanensis n. gen. n. sp." = Mesolygaeus laiyangensis Ping 1928 shore bug
Shl1001, 1002, 1003, 1004, 1005, 1019, 1020