ammonites
Daohugou (CNU 2005 collection) (Jurassic to of China)

Where: Nei Mongol, China (41.3° N, 119.2° E: paleocoordinates 42.6° N, 122.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Daohugou Formation, Callovian to Callovian (164.7 - 155.7 Ma)

• The age of the Daohugou fauna has been controversial. Liu et al. (2012) obtained U-Pb shrimp ages of 160.5 and 161.0 Myr on ash beds associated with fossils of the Daohugou fauna, suggesting a Callovian-Oxfordian age.

• group of beds-level stratigraphic resolution

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

• "tuffaceous shale"; "freshwater shales interbedded with tuffs"

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected in 2005

Collection methods: bulk, quarrying, mechanical

• All type materials are housed at the Key Lab of Insect Evolutionary and Environment Change, College of Life Sciences, Capital Normal University, Beijing, China.

Primary reference: Y. Wang and D. Ren. 2006. Middle Jurassic Pseudocossus fossils from Daohugou, Inner Mongolia in China (Homoptera, Palaeontinidae). Acta Zootaxonomica Sinica 31:289-293 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113376: authorized by Matthew Clapham, entered by Matthew Clapham on 29.07.2011, edited by Jered Karr

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