Where: Heilongjiang, China (47.3° N, 134.2° E: paleocoordinates 49.4° N, 137.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Dong'anzhen Formation (Longzhaogou Group), Early/Lower Berriasian (145.0 - 140.2 Ma)

• Beds range over 10 m of strata in the Lower Dong'anzhen Formation; Upper Volgian (according to Sey and Kalacheva 1999 = Lower Berrias)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, argillaceous siltstone and lithified, silty shale

Size class: macrofossils

Primary reference: J. Sha and F. T. Fursich. 1993. Biostratigraphy of the Upper Jurassic-Lower Cretaceous bivalves Buchia and Aucellina of eastern Heilongjiang, northeast China. Geol. Mag. 130(4):533-542 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 59678: authorized by Martin Aberhan, entered by Sabine Nürnberg on 07.04.2006

Creative Commons license: CC BY (attribution)