Genus: Mengciusornis WANG, O’CONNOR, ZHOU & ZHOU, 2019
Etymology: In reference to the ancient Chinese philosopher Mengzi, and Greek, ornis, "bird."

Species: dentatus WANG, O’CONNOR, ZHOU & ZHOU, 2019
Etymology: Latin, dentatus, "tooth."

Holotype: IVPP V26275

Locality: Lamadong Town, Jianchang County, Liaoning Province, north-eastern China.

Horizon: Jiufotang Formation.

Biostratigraphy:

Age: Aptian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: A nerly complete and partially articulated skeleton preerved on a single slab.

Note: With feather traces.