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The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair

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The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair.jpg Palæolithic Men Attacking Cave BearThumbnailsMiocene MammalsPalæolithic Men Attacking Cave BearThumbnailsMiocene MammalsPalæolithic Men Attacking Cave BearThumbnailsMiocene MammalsPalæolithic Men Attacking Cave BearThumbnailsMiocene Mammals

The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair.