J0013 Unidentified flora
BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD & LIGHT HAMMER BLOW. SPECIMEN 40mm X 27mm (1-9/16" x 1-1/16"). TWO FRAGMENTS OF RIM OF CONVEX HALF GLUED INTO POSITION. MILD SULFURIC ACID BATH APPLIED.
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Photo by Mark Kmiecik
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