Zhang, K., D. Yang, and D. Ren. “The First Middle Jurassic Protobrachyceron Handlirsch Fly (Diptera: Brachycera: Protobrachyceridae) from Inner Mongolia (China)”. Zootaxa, vol. 1879, no. 1, Sept. 2008, pp. 61–64, doi:10.11646/zootaxa.1879.1.7.