M. Ruggiero & D. Gordon, eds. 2013. Consensus Management Hierarchy for the ITIS & Species2000 Catalogue of Life. Contributors: Nicolas Bailly, Thierry Bourgoin, Richard Brusca, Thomas Cavalier-Smith, Daphne Fautin, Dennis Gordon, Gerald Guala, Michael Guiry, Paul Kirk, Elliot Lefkowitz, David Mabberly, David Maddison, Alan Paton, Michael Ruggiero, Peter Stevens, and Brian Tyndall
Superclass Cryptosyringida was apparently coined to combine ophiuroids with echinoids and holothurians, a treatment that is not followed by Ruggiero et al. (2013)
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