. Early Llandovery crinoids and stelleroids from the Cataract Group (Lower Silurian) in southern Ontario, Canada . >* â â â h,<«s««^ *.â¢â *£ /y '^^^ ~W<^ 3?«Si^8K^ 'ifiw;-

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Keywords: ., bookcentury1900, bookd, bookleafnumber15, booksubjectpaleontology