Duncan, P. M. & Sladen, W. P. (1886). Fossil Echinoidea of western Sind and the Coast of Bilúchístán and of the Persian Gulf, from the Tertiary Formations. Fasc. VI. The Fossil Echinoidea from the Makrán Series (Pliocene) of the Coast of Bilúchístán and of the Persian Gulf.
Palaeontologia Indica. Ser. XIV 1, 368-382.