Description
Rare fossil urchins on the same plate :Acrosalenia hemicidaroides wright 1851. Middle Jurassic,Bajocian,Parkinsoni zone; 2,2and 3cm without the spines. About 160 million years old. Plate 14X17cm
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Rare fossil urchins on the same plate :Acrosalenia hemicidaroides wright 1851. Middle Jurassic,Bajocian,Parkinsoni zone; 2,2and 3cm without the spines. About 160 million years old. Plate 14X17cm