Also known as Hongheba

Where: Sichuan, China (29.4° N, 104.8° E: paleocoordinates 30.1° N, 109.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lower Member (Shaximiao Formation), Bajocian (170.3 - 168.3 Ma)

• Several radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by He in 1972/1979

Collection methods: quarrying, mechanical,

Primary reference: X. He and K. Cai. 1984. The Middle Jurassic dinosaur fauna from Dashanpu, Zigong, Sichuan. Vol. I. The ornithopod dinosaurs. Sichuan Scientific and Technological Publishing House, Chengdu 1-71 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 57061: authorized by Matthew Carrano, entered by Kaitlin Maguire on 01.12.2005

Creative Commons license: CC BY (attribution)