Early in the Pleistocene, Sulawesi had a dwarf elephant and a dwarf form of "Stegodon", (an elephant relative, "S. sompoensis"); later both were replaced by larger forms. A giant suid, "Celebochoerus", was also formerly present. It is thought that many of the migrants to Sulawesi arrived via the Philippines, while Sulawesi in turn served as a way station for migrants to Flores. A Pleistocene faunal turnover is recognized, with the competitive displacement of several indigenous tarsiers by more recently arriving ones and by "Celebochoerus" by other medium-sized herbivores like the babirusa, anoa and Celebes warty pig.