In a message dated 98-07-27 03:04:07 EDT, qilongia@yahoo.com writes: << However, all except *Stegosaurus* and probably *Tuojiangosaurus* and *Wuerhosaurus* had shoulder spikes pointing backward and along the flank, two defenses in one. >> There is at least one specimen of _Tuojiangosaurus_ with both shoulder spikes preserved _in situ_.