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2026-06
Volume 12, issue 02
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ISSN: 2274-0422

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Specimen infos
Collection

Information
Sex : indet

Age (if applicable) :

Material Type : track

Origin :

Taxonomy
Class : Sauropsida

Order : Saurischia

Family : Eubrontidae

Genus : Eubrontes

Species :✝isp.


Description
JYX-TI5 is tentatively assigned to cf. Eubrontes. It is preserved as a natural cast on dark red quartz sandstone, with a preservation grade of 0.5–1.5. It shows largely complete digit impressions and a metatarsophalangeal region, as well as some claw impressions, but no digital pad impressions. The footprint has three distinct digit impressions, a relatively distinct U-shaped metatarsophalangeal region, a separation between the proximal region of digit III and the metatarsophalangeal region, and relatively clear claw impressions; its surface bears irregular linear ridges that likely represent microbially induced sedimentary structures (MISS). JYX-TI5 is 22.1 cm long, with a length-to-width ratio of 1.5, weak mesaxony (0.45), and a divarication angle between digits II and IV of 50°; the interdigital angle between digits II and III is slightly larger than that between digits III and IV.

Related article
3D models related to the publication: New Cretaceous dinosaur track sites from the Jiaguan Formation, Sichuan Province, China: ichnotaxonomy and preservation
Lida Xing Logo, Jens N. Lallensack Logo, Junhong Mou, Lin Liu Logo, Shan Jiang, Qi Qi Logo, Anthony Romilio Logo, Yong Ye, Xin Shen and Ting Xu
Published online: 08/10/2026

Keywords: Dinosaur tracks; Jiaguan Formation; Photogrammetry

https://doi.org/10.18563/journal.m3.317

Cite this article: Lida Xing, Jens N. Lallensack, Junhong Mou, Lin Liu, Shan Jiang, Qi Qi, Anthony Romilio, Yong Ye, Xin Shen and Ting Xu, 2026. 3D models related to the publication: New Cretaceous dinosaur track sites from the Jiaguan Formation, Sichuan Province, China: ichnotaxonomy and preservation. MorphoMuseuM e317. doi: 10.18563/journal.m3.317

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  Abstract

    The present 3D dataset contains the 3D models analyzed in Xing et al. (in press), Newly discovered Cretaceous dinosaur track sites from the Jiaguan Formation, Sichuan Province, China: ichnotaxonomy and preservation. The dataset includes photogrammetric 3D models of the specimens shown in Figures 6–9 and 16–17 of the original article. These correspond to track-bearing slabs and selected footprints from the Hongyangoukou and Jinyuxi tracksites and the Shimiaogou 2025 tracksite in the Gulin area, Sichuan Province, China. The Hongyangoukou material comprises three reddish-brown siltstone slabs preserving at least 61 theropod tracks, including nine trackways (HYGK-T1 to HYGK-T9) and isolated footprints (HYGK-TI1 onward). The Jinyuxi material comprises one isolated theropod natural cast (JYX-TI5) assigned to cf. Eubrontes, associated with microbially induced sedimentary structures (MISS). The Shimiaogou 2025 material comprises two slabs preserving at least 25 dinosaur footprints, including ornithopod trackways SMG25-O1 and SMG25-O2, theropod trackway SMG25-T1, and isolated footprints; all occur as natural positive reliefs. The 3D surface models are provided in PLY format. 


  M3 article infos

Article state: in_press

PDF

3D data

M3#1985

JYX-TI5 is tentatively assigned to cf. Eubrontes. It is preserved as a natural cast on dark red quartz sandstone, with a preservation grade of 0.5–1.5. It shows largely complete digit impressions and a metatarsophalangeal region, as well as some claw impressions, but no digital pad impressions. The footprint has three distinct digit impressions, a relatively distinct U-shaped metatarsophalangeal region, a separation between the proximal region of digit III and the metatarsophalangeal region, and relatively clear claw impressions; its surface bears irregular linear ridges that likely represent microbially induced sedimentary structures (MISS). JYX-TI5 is 22.1 cm long, with a length-to-width ratio of 1.5, weak mesaxony (0.45), and a divarication angle between digits II and IV of 50°; the interdigital angle between digits II and III is slightly larger than that between digits III and IV.

Type: "3D_surfaces"

doi: 10.18563/m3.sf.1985

Data citation: Lida Xing, Jens N. Lallensack, Junhong Mou, Lin Liu, Shan Jiang, Qi Qi, Anthony Romilio, Yong Ye, Xin Shen and Ting Xu, 2026. M3#1985. doi: 10.18563/m3.sf.1985

  state:in_press




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