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Limestone breccia, deformed so that original clasts have been flattened and stretched, and subsequently folded. Polished slab in stone merchant's yard.  Cornwall

Cornwall: Limestone breccia, deformed so that original clasts have been flattened and stretched, and subsequently folded. Polished slab in stone merchant's yard.

Ammonites are perhaps the most widely known fossil, possessing the typically ribbed spiral-form shell as pictured above. These creatures lived in the seas between 240 - 65 million years ago, when they became extinct along with the dinosaurs.

Ammonites are perhaps the most widely known fossil, possessing the typically ribbed spiral-form shell as pictured above. These creatures lived in the seas between 240 - 65 million years ago, when they became extinct along with the dinosaurs. and textures