Volume

Durham, J.W., Caster, K.E., Exline, H., Fell, H.B., Fischer, A.G., Frizzell, D.L., Kesling, R.V., Kier, P.M., Melville, R.V., Moore, R.C., Pawson, D.L., Regnéll, G., Spencer, W.K., Ubaghs, G., Wagner, C.D. & Wright, C.W. 1966. Volume 2. In R.C. Moore (ed.), Treatise Invert. Paleont., Part U, Echinodermata 3. Geol. Soc. Amer. & Univ. Kansas Press: [i]-ii, U367-U695.