Tholos B at Platanos dates from the EM III - Second Early Minoan period (2800-2300 BC)..
See:
- Borja Legarra Herrero, The Secret Lives of the Early and Middle Minoan Tholos Cemeteries: Koumasa and Platanos, in Prehistoric Crete: Regional and Diachronic Studies on Mortuary Systems, ed. J. M. A. Murphy Philadelphia: INSTAP Academic Press, 2011, pp. 49-84.
- www.minoancrete.com/platanos.htm