An unusual cluster of ornithuromorph bones preserved in an oval-shaped organic residue was recovered from the Changma locality of the Lower Cretaceous Xiagou Formation. Based on its oval outline, the presence of both broken and articulated elements, and Optical Photothermal Infrared (O‑PTIR) spectral data indicating the preservation of organic residues, we interpret this new specimen, IVPP V34827, as a probable pellet, possibly cast by a medium-sized non-avian theropod, and containing skeletal remains that belong to Gansus. To date, the only documented non-avian theropod from the Xiagou Formation is Jian changmaensis, a microraptorine dromaeosaurid. Therefore, we suggest Jian as a potential producer of the pellet described here, based on its size and the documented diets of other microraptorines, and hypothesize that at least some members of Microraptorinae cast pellets. This new pellet specimen thus provides valuable evidence for understanding the trophic relationships in the Early Cretaceous Changma ecosystem.