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A proposed ontogenesis and evolutionary lineage of conodont Eurygnathodus costatus and its role in defining the base of the Olenekian (Lower Triassic)

BiologyEvolutionary LineageDental MorphologyConodont Eurygnathodus CostatusDevelopmental BiologyPhylogeneticsVertebrate DevelopmentMorphological EvidenceNatural SciencesEvolutionary BiologyBiostratigraphyLower TriassicMedicineSynapsida