Essays about: "Jessica Grahn"
Found 1 essay containing the words Jessica Grahn.
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1. The Primitive Antiarch Yunnanolepis from China : A Microtomographic Study
University essay from Uppsala universitet/PaleobiologiAbstract : Placoderms appeared in the Silurian period and rapidly evolved and dominated the waters during the Devonian period. Among the earliest of the placoderms are yunnanolepids, a primitive form of antiarch from the Early Devonian of China and Vietnam. READ MORE
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