^Liu, Y.; Xiao, S.; Shao, T.; Broce, J.; Zhang, H. (2014). "The oldest known priapulid-like scalidophoran animal and its implications for the early evolution of cycloneuralians and ecdysozoans". Evolution & Development. 16 (3): 155. doi:10.1111/ede.12076. PMID24754444. S2CID205095219.