Dinosaur Planet Survivors or Survivors: Dinosaur Planet II is a 1984 science fiction novel by Anne McCaffrey.It is the sequel to Dinosaur Planet (1978) and thus the second book in the Ireta series. In 1985 the first two books were issued in one omnibus edition, The Ireta Adventure. McCaffrey and co-authors continued the series in 1990 and 1991 with three books sometimes called the Planet Pirates trilogy or series.