Originally considered to derive from Upper Jurassic layers, but Yu & Yao (1989) only listed the species from the ... [details]
Shuang Miao, Lingyuan, Liaoning, China [details]
Shuang Miao, Lingyuan, Liaoning, China [details]
Daozigou, Lingyuan, Liaoning, China [details]
Daozigou, Lingyuan, Liaoning, China [details]
Guojiadian, Lingyuan, Liaoning, China [details]