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Description: | Dactylioceras commune is an ammonite that is commonly found on the Yorkshire coast. This is the same kind of ammonite as the snakestone, also in this case, so that you can see what it would have looked like before the snake's head was carved on it. The ribs of Dactylioceras start as a single line and then split into pairs over the edge (keel) of the ammonite, and then turn back to a single line. This is called 'bifurcation'. These rib patterns are often used to tell different species of ammonites apart. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | fossils natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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