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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 The walking-fish or mud-skipper (Periophthalmus)ThumbnailsOther PetsThe walking-fish or mud-skipper (Periophthalmus)ThumbnailsOther PetsThe walking-fish or mud-skipper (Periophthalmus)ThumbnailsOther PetsThe walking-fish or mud-skipper (Periophthalmus)ThumbnailsOther Pets

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