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By: Walcott, Charles D. (Charles Doolittle),Edition:Publication info: Washington, Govt. print. off, 1898Volume: 30Series:Holding Institution: MBLWHOI LibrarySubjects: Jellyfishes, FossilBHL Collections:
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By: Johnson, Ralph Gordon, - Richardson, Eugene S., (Eugene Stanley), Jr.Edition:Publication info: [Chicago], Field Museum Press, 1968Volume: v.12:no.7 (1968)Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Essex Illinois Jellyfishes, Fossil Paleontology PennsylvanianBHL Collections: