Principles of Paleontology

The following is a list of the twenty-four characters and their possible character-states. In each case, the “primitive” character-state is assigned the value 0 and “derived” states are assigned the value 1 or 2. 1. Test outline: 0 = circular to slightly elongate; 1 = oval. 2. Test height: 0 = highly domed; 1 = flat. 3. ................
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