J0015 ?Senftenbergia plumosa forma dentata
By Mark Kmiecik
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BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD & HAMMER BLOW. PART OF BOTH HALVES CRUMBLED. SPECIMEN 43mm X 28mm (1-11/16" x1-1/16"). NONE. MILD SULFURIC ACID BATH APPLIED.
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Photo by Mark Kmiecik
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