"550-597. The dates of 'the last war of the Elder Days' were changed to 545-587, and after the last words of the original entry the following was added: 'Ancalagon is cast down by Earendil and all save two of the Dragons are destroyed.'" (HoME XI, 3, V)
This quote from the Tale of Years is unambiguous as to the dragons surviving the fall of Angband. They were Scatha and Smaug.
|