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The Origin of the modern Great White Shark Part 3 |
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Above left: This shows the larger sizes attained by the great white (GW) teeth in the past. On the leftis a 3 inch tooth 2-3 MYA and on the right a 2 1/2 inch modern tooth, about the maximum size there is at present.
Above centre: a 5 1/2 inch megalodon tooth beside a 2 1/2 inch modern GW tooth. This shows the distinct differences in the species.
Above right: a 2 inch serrated upper anterior tooth of a Isurus (Carcharodon) escheri. extinct mako. approx 10 MYA.. The serrations are very difficult to see as they are extremely fine / weak.
Right: we have a 2 1/4 inch anterio-lateral tooth from an Isurus (Carcharodon) hastalis. The broad-form extinct mako with smooth cutting edge about 5 MYA. |
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Above: 2 inch anterior tooth and 1 3/4 upper anterio-lateral tooth from Isurus (Carcharodon) narrow form extinct mako about 13-15 MYA with a smooth cutting edge. |
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Above: 1 3/8 lower lateral teeth showing a modern GW on the left and beside it an Isurus (Carcharodon) hastalis broad form extinct mako. Note the difference in serrations. |
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Above left: 1 1/4 lateral teeth showing a modern GW and an Isurus (Carcharodon) hastalis broad form extinct mako about 3-5 MYA. Above centre: a 1 3/4 upper 3rd intermediate tooth of the GW about 3-4.5 MYA with a partially serrated cutting edge.
Above right: 1 3/4 inch upper anterior tooth GW about 2.5-3 MYA. Fully serrated. Right: a modern 1 1/2 inch upper lateral tooth. |
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The material on the 3 parts of this GW article are copyright by Steven A. Alter. Contact Steve before using them. See the "Cool Links" page to contact him. |
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Goto my Homepage |
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Origin of the GW Part 1 |
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Contents |
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Origin of the GW Part 2 |
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