A0013 ?Mazonomya mazonensis
BOTH HALVES SIDERITE CONCRETION, SPLIT BY HAMMER BLOW. BUTTERFLY POSITION, SPECIMEN APPROXIMATELY 26mm X 25mm X 3.5mm (1" X 1" X 1/8"). CONCAVE HALF BROKEN & GLUED. HYDROCHLORIC ACID BATH -- OVERDONE.
Credit
Photo by Mark Kmiecik
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