Identify a specimen... Fish Fish

Fish skeletons are not especially common fossils, but their fossilised scales (see right) often turn up in sedimentary rocks of many ages. These are often square, rectangular or diamond shaped, and quite shiny. Fish were the first vertebrates, and their fossils occasionally turn up in rocks from as long ago as the Ordovician period. The group fish includes sharks, whose characteristic pointed teeth are extremely common in some places and are often sold cheaply in fossil shops. These vary in size from a few inches to less than a centimetre in length.   Return to Identify by Picture Return to Listed Flora & Fauna

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