Daxigou (Jurassic of China)

Also known as Jianchang

Where: Liaoning, China (40.8° N, 119.8° E: paleocoordinates 42.1° N, 123.0° E)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tiaojishan Formation, Oxfordian (163.5 - 157.3 Ma)

• The Daxishan site (also known as the Daxigou site) of Liaoning was most recently dated to be 160±0.99 Ma (12-Liu et al. 2012). The Lanqi Formation, a stratigraphic equivalent of the Tiaojishan in the adjacent Beipiao area, is dated to be 160 Ma in a recent geochronological study (34-Chang et al. 2009) (more discussion on “Geological Age of Tiaojishan Formation”). The Daxishan site is of the Oxfordian age of the Late Jurassic" (Yuan et al. 2013)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; shale

Size class: macrofossils

Preservation: adpression, soft parts

Collection methods: BMNH = Beijing Museum of Natural History

Primary reference: Z.-X. Luo, C.-X. Yuan, Q.-J. Meng and Q. Ji. 2011. A Jurassic eutherian mammal and divergence of marsupials and placentals. Nature 476:442-445 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 114842: authorized by Matthew Carrano, entered by Matthew Carrano on 25.08.2011, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Tribosphenida -
Juramaia sinensis n. gen. n. sp.
Juramaia sinensis n. gen. n. sp. Luo et al. 2011 eutherian
BMNH PM1343 - holotype
 Multituberculata -
Rugosodon eurasiaticus n. gen. n. sp.
Rugosodon eurasiaticus n. gen. n. sp. Yuan et al. 2013 multituberculate
BMNH PM1142A - holotype (mainpart and counter-part on two shale slabs split upon discovery, preserved with full dentition, broken skull, most of the postcranial skeleton, and residual soft tissues, such as halo of integument)