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PDF) The Lower Ordovician trilobite Megistaspis (Rhinoferus) hyorrhina (Leuchtenberg, 1843) (Trilobita) in Norway, with notes on its autecology | Magne Høyberget and Ole Andreas Hoel - Academia.edu
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Traces of an ancient immune system – how an injured arthropod survived 465 million years ago | Scientific Reports
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