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By "Guensburg, Thomas Edgar. "
Revised phylogeny and functional interpretation of the Edrioasteroidea based on new taxa from the Early and Middle Ordovician of western Utah / Thomas E. Guensburg --, James Sprinkle --.
By: Guensburg, Thomas Edgar. - Sprinkle, James, - Field Museum of Natural History.
Publication info: Chicago, Ill. :Field Museum of Natural History,1994.
Contributed by: University of Illinois Urbana Champaign