Yunshan Formation, Longzhaogou Group, eastern Heilongjiang, China (Cretaceous of China)

Where: Heilongjiang, China (45.9° N, 132.5° E: paleocoordinates 51.8° N, 132.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Yunshan Formation (Longzhaogou Group), Aptian (125.0 - 113.0 Ma)

• The association of all bivalves indicates an Aptian age for the Yunshan Formation.

• formation-level stratigraphic resolution

Environment/lithology: paralic; lithified siliciclastic sediments

• The Yunshan Formation is mainly composed of non-marine sediments apart from intercalations of marine deposits in the Lower Member. The rocks include andesites, tuffs, liemstones, medium-fine-grained sandstones, siltstones, mudstones and, locally, coals. The Upper Member mainly consists of medium and dark grey marine mudstones, and siltstones intercalated with non-marine coal bearing measures, with thin tuff beds.

Size class: macrofossils

Collection methods: Dinoflagellates not considered

Primary reference: J. Sha, M. Matsukawa, H. Cai, B. Jiang, M. Ito, C. He, and Z. Gu. 2003. The Upper Jurassic–Lower Cretaceous of eastern Heilongjiang, northeast China: stratigraphy and regional basin history. Cretaceous Research 24(6):715-728 [W. Kiessling/W. Kiessling/W. Kiessling]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 59663: authorized by Martin Aberhan, entered by Sabine Nürnberg on 06.04.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
 Pectinida - Buchiidae
 Thraciida - Thraciidae
 Cardiida - Psammobiidae
Sinopsammobia ovalis Li et al. 1982 clam
 Cardiida - Corbiculidae
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805