Species: paradoxus WU, SUES & SUN, 1995
Etymology: Greek, paradoxos, "strange."
Holotype: IVPP V8274
Locality: Hill near the southern bank of Yangtze River, opposite Yichang city, Hubei Province, China.
Horizon: Wulong Formation.
Age: Aptian-Albian Stage, Middle Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.
Material: Partial skeleton including snout and mandible, fifteen vertebrae, girdle and limb bones and an osteoderm.