At Surkotada from all the three periods quite a good number of bones of horse (Equus Caballus Linn) ... have been recovered. The parts recovered are very distinctive bones: first, second and third phalanges and few vertebrae fragments.
Source, in full
Jagat Pati Joshi, Excavation at Surkotada and Exploration in Kutch (New Delhi: Archaeological Survey of India, Memoirs N°87, 1990), pp. 381-382.quoted in THE HORSE AND THE ARYAN DEBATE by Michel Danino* (Published in the Journal of Indian History and Culture of the C. P. Ramaswami Aiyar Institute of Indological Research, Chennai, September 2006, No.13, pp. 33-59.)