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Drawing of the skull and lower jaw of the Meritherium, discovered by Dr. Andrews in the Upper Eocene of the Fayum Desert.

Drawing of the skull and lower jaw of the Meritherium, discovered by Dr. Andrews in the Upper Eocene of the Fayum Desert..jpg The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cellThe oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor TraquairThumbnailsDiagrammatic representation of the structures present in a typical cell
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Drawing of the skull and lower jaw of the Meritherium, discovered by Dr. Andrews in the Upper Eocene of the Fayum Desert. The shape of the skull and proportions of face and jaw are like those of an ordinary hoofed mammal such as the pig; but the cheek-teeth are similar to those of the Mastodon, and whilst the full complement of teeth is present in the front of the upper jaw, we can distinguish the big tusk-like incisor which alone survives on each side in Palæomastodon, Mastodon, and the elephants, as the great pair of tusks.

Author
The Kingdom of Man
By Sir E. Ray (Edwin Ray) Lankester
Published 1907
Available from gutenberg.org
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780*1055
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