[dinosaur] Two new dinosaur tracksites from Lower Cretaceous of Sichuan, China

Subject: [dinosaur] Two new dinosaur tracksites from Lower Cretaceous of Sichuan, China

From: Ben Creisler <bcreisler@gmail.com>

Date: Thu, 11 May 2017 08:17:36 -0700

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Ben Creisler

bcreisler@gmail.com

A new paper:

Lida Xing, Hui Dai, Martin G. Lockley, Anthony Romilio, Hendrik Klein, Zhongdong Li, Xufeng Hu, Guangzhao Peng, Yong Ye & W. Scott Persons IV (2017)

Two new dinosaur tracksites from the Lower Cretaceous Jiaguan Formation of Sichuan Basin, China: specific preservation and ichnotaxonomy.

Historical Biology (advance online publication)

doi: http://dx.doi.org/10.1080/08912963.2017.1326113

http://www.tandfonline.com/doi/full/10.1080/08912963.2017.1326113

Two new dinosaur tracksites are reported from the Lower Cretaceous Jiaguan Formation in the Sichuan Basin, Qijiang District of Chongqing. These are the Gaoqing-Yongsheng and the Huibu tracksites, which represent the 13th and 14th reports from this formation. The Gaoqing-Yongsheng tracksite reveals the trackway of a large biped (ornithopod) in association with isolated sauropod tracks and large indeterminate undertracks with radial cracks. These features are preserved as natural casts with pebble infillings in a coarse, cross bedded and very thick bedded sandstone sequence. The Huibu tracksite reveals isolated theropod tracks and ornithopod tracks, the latter having a quadripartite, Caririchnium-like morphology, preserved in a thin bedded sandstone sequence with intercalated mudstone.