Where: Liaoning, China (41.6° N, 120.8° E: paleocoordinates 44.1° N, 122.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Yixian Formation, Late/Upper Barremian (130.0 - 125.5 Ma)

• The late Barremian age of this fossil-bearing stratum in the Sihetun area (including Huangbanjigou) is considered to be well supported by radiometric dating, from 126.1 +/- 1.7 to 124.6 +/- 0.1 Ma (Swisher et al.,1999, 2002; Wang et al., 2001b; Chen et al., 2004; Yang et al., 2007), although the uppermost beds of Huangbanjigou locality are early Aptian, 123.3 +/- 0.5 - 122.8 +/- 1.6 Ma (Wang et al., 2001a; Yang et al., 2007).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, tuffaceous mudstone

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by Capital Normal University in 2010

Primary reference: A. A. Prokin and D. Ren. 2011. New species of variegated mud-loving beetles (Coleoptera: Heteroceridae) from Mesozoic deposits of China. Paleontological Journal 45(3):284-286 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111716: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2011

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)