The type species, S. dongi, is based on IVPP V13363, an articulated, nearly complete skeleton. The skull of this individual was 17 centimeters (6.7 inches) long, and the wingspan was estimated to be 1.2 meters (3.9 feet).
S. dongi's type species is based on IVPP V13363, a well-preserved skeleton. Its skull measures 17 centimeters in length, and the wingspan is estimated to be around 1.2 meters.