Northern Yan
The type species "Longchengornis sanyanensis" was in 1997 named and described by Hou Lianhai. The generic name "Longchengornis" combines the older name of Chaoyang, Longcheng or "Dragon City", with a Greek "ornis", "bird". The specific name refers to the Sanyan, the "Three Yan" as the discovery was made on the former territory of the three Yan kingdoms: the Former Yan, the Later Yan and the Northern Yan.