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[Burgess shale] [Marjum Fm.] [Wheeler Fm.] [Weeks Fm.] [Other N. American site]

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[Burgess shale] ... Burgess shale, BC, Canada (and other Canadian Rockey) specimens [Marjum Fm.] ... Marjum formation, Utah, USA [Wheeler Fm.] ... Wheeler formation, Utah, USA [Weeks Fm.] ... Weeks formation, Utah, USA [Other N. American site] ... Spence shale, Pioche shale, Matewee Fm., Mt. Simmon Ccnvex etc... [ROW site] ... Emu Bay shale etc...