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PALAEONTOLOGY[online] | Article: Fossil Focus > Fossil Focus: Heterostraci
Article" Fossil Focus: Heterostraci" by Joseph N. Keating published on PALAEONTOLOGY[online] with in the Fossil Focus category.... by Joseph N. Keating*1 Introduction: The Heterostraci (which means ‘different shield’) make up an extinct group of jawless fish that lived during the