Artal, P., van Bakel, B.W., Fraaije, R.H.B. & Jagt, J.W.M. (2013) New retroplumid crabs (Crustacea, Brachyura, Retroplumidae Gill, 1894) from the Eocene of Huesca (Aragón, Spain). Zootaxa, 3652 (3), 343–352.