Xisanjia (Cretaceous of China)

Where: Nei Mongol, China (41.3° N, 119.1° E: paleocoordinates 44.0° N, 120.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Yixian Formation (Jehol Group), Early/Lower Aptian (125.5 - 122.5 Ma)

• Equivalent to either the Jianshangou or the Dawangzhangzi beds (about 124e122 Ma)

• group of beds-level stratigraphic resolution

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

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Reposited in the NIGPAS

Primary reference: B. Wang, H. Zhang, Y. Fang, D. Wang, and S. Ji. 2008. New data on Cretaceous Palaeontinidae (Insecta: Hemiptera) from China. Cretaceous Research 29:551-560 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106346: authorized by Matthew Clapham, entered by Jered Karr on 10.03.2011, edited by Matthew Clapham, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Hemiptera - Palaeontinidae
Miracossus ingentius Ren et al. 1998 true bug
NIGP148389, NIGP148390a,b
Ilerdocossus fengningensis3 Ren et al. 1998 true bug
NIGP 154992
Ilerdocossus ningchengensis n. sp. Wang and Zhang 2008 true bug
 Coleoptera - Eulichadidae
Cretasyne lata n. gen. n. sp.4
Cretasyne lata n. gen. n. sp.4 Yan et al. 2013 forest stream beetle
NIGP 154572
 Coleoptera - Cupedidae
Zygadenia liui n. sp.2 Jarzembowski et al. 2015 reticulated beetle
NIGP 154979 (LBSH05261)
 Ornithothoraces - Hongshanornithidae
Tianyuornis cheni n. gen. n. sp.5
Tianyuornis cheni n. gen. n. sp.5 Zheng et al. 2014 bird
 Tribosphenida -
Ambolestes zhoui n. gen. n. sp.1
Ambolestes zhoui n. gen. n. sp.1 Bi et al. 2018 eutherian
STM33-5 - holotype