Also known as L-00613

Where: Guizhou, China (25.5° N, 105.5° E: paleocoordinates 14.5° N, 94.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Songzikan Member (Guanling Formation), Middle Triassic (247.2 - 237.0 Ma)

• "The Songzikan Member (Fig. 1B) is composed of dolostone and variegated claystone. A coarse-grained green pisolite that is rich in volcanic ash (Zhu, 1994) at its base is widely distributed in southwestern China and a pronounced marker for the basal Guanling Formation (Zhu, 1994; Wan, 2002; Xiao and Hu, 2005). 40Ar/39Ar dating of ash in the green pisolite in the Zunyi region, Guizhou Province is 238–239 Ma (Hu et al., 1996). After recent radio-isotopic data by Mundil et al. (2010) this corresponds to the Ladinian. However biostratigraphic data point to an Anisian age. The Songzikan Member yields abundant conodont and bivalve faunas that suggest an early Anisian age throughout southern China (Wang et al., 2005, 2009; Zhang et al., 2009)." (Xing et al. 2013)

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; argillaceous dolomite and claystone

Size class: macrofossils

Preservation: trace

Primary reference: L. Xing, H. Klein, M. G. Lockley, J. Li, J. Zhang, M. Matsukawa, and J. Xiao. 2013. Chirotherium Trackways from the Middle Triassic of Guizhou, China. Ichnos 20(2):99-107 [A. Dunhill/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 196818: authorized by Alex Dunhill, entered by Bethany Allen on 09.10.2018

Creative Commons license: CC BY (attribution)