J0003 ?Crenulopteris acadica
BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD. SPECIMEN 24mm X 5mm (15/16" x 1/4") MILD SULFURIC ACID BATH APPLIED.
Credit
Photo by Mark Kmiecik
By Mark Kmiecik
BOTH HALVES SIDERITE CONCRETION, SEPARATED BY FREEZE/THAW METHOD. SPECIMEN 24mm X 5mm (15/16" x 1/4") MILD SULFURIC ACID BATH APPLIED.
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