M3#1987 cf. Grallator is the dominant ichnotaxon in Fig. 17, which preserves 12 isolated cf. Grallator footprints, all preserved as natural positive reliefs with preservation grade 1–2. These small theropod tracks are 8.5–20.4 cm long and generally slender, and are mostly complete tridactyl impressions with digit III longest and digit II shortest, V-shaped metatarsophalangeal regions, and faint claw impressions or digital pads in some specimens.
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#1987. doi: 10.18563/m3.sf.1987
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Sex : indetAge (if applicable) : Material Type : trackOrigin :
Taxonomy
Description
cf. Grallator is the dominant ichnotaxon in Fig. 16, which preserves 12 isolated cf. Grallator footprints, all as natural positive reliefs with preservation grade 1–2. These small theropod tracks are 8.5–20.4 cm long and generally slender, mostly complete tridactyl impressions with digit III longest and digit II shortest, V-shaped metatarsophalangeal regions, and faint claw impressions or digital pads in some specimens.
Related article
3D models related to the publication: New Cretaceous dinosaur track sites from the Jiaguan Formation, Sichuan Province, China: ichnotaxonomy and preservation
Published online: 08/10/2026 Dinosaur tracks ; Jiaguan Formation ; Photogrammetry
https://doi.org/10.18563/journal.m3.317
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
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, Jens N. Lallensack