Timaeus (c. 345 – c. 250 BC) was a Greek historian, born in Tauromenium, Sicily. After migrating to Athens he wrote an extensive work, The Histories, thought to consist of 40 volumes. He introduced the method of noting dates by Olympiads. Only fragments of his output still exist. Zhirov notes[0458.40] that Cosmas Indicopleustes quotes Timaeus recounting that the first ten kings of Chaldea came from the island of Atlantis, although Timaeus does not give his source.
>Timaeus of Tauromenium, who was born about 20 years before Plato died, is not the Timaeus referred to in the Dialogue of the same name. This Timaeus was a noted historian, who among others, was heavily relied on by Diodorus Siculus(a).<
(a) https://www.academia.edu/32364554/Diodorus_use_of_Timaeus *