In a message dated 95-10-03 17:03:54 EDT, RaptorRKC@aol.com writes: >I still find it hard to see how ankylosaurs and stegosaurs did it.<< Perhaps they mated under water, where buoyancy would have sustained their weight and would even have allowed a belly-to-belly position, bypassing the tail and spike problems that stegosaurs may have had.