A trove of ancient fish fossils helps trace the origin of jaws
Nature Podcast
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Four Fossil Papers
One of the most intriguing is going to be a fish called shushan ostius. It's one of those early jawed vertebrates, probably from which all the others sprang somehow. And then weve got ceanodus, which is basically a load of teeth. These are the earliest gorge vertebrate teeth anywhere in the fossil record. Then there's another great thing, which is not a jawed fish at all. It's a jawless fish called a galeaspid. This one has got the whole fish. On each side, on the kind of bottom edge of each side, is a fold, like a fold of fins, like on each side, like gof
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