Where: Guizhou, China (25.9° N, 105.4° E: paleocoordinates 20.3° N, 87.2° E)

• coordinate estimated from map

When: Wayao Formation, Julian (235.0 - 232.0 Ma)

• Lower Wayao formation

Environment/lithology: limestone

Size class: microfossils

Preservation: original phosphate

Collection methods: chemical, acetic

• Yichang Institute of Geology and Mineral Resources

Primary reference: W. Chen. 2002. New Data of Middle-Late Triassic Elasmobranch Ichthyoliths from "Falang Formation" in Guanling, Guizhou. Acta Palaeontologica Sinica 19(3):276-287 [M. Clapham/P. Vazquez/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131029: authorized by Matthew Clapham, entered by Priscilla Vazquez on 18.07.2012

Creative Commons license: CC BY (attribution)