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Energy-dispersive X-ray spectrometric (EDX) analyses in the scanning electron microscope, using carbon coated material. 10 – hyaline lorica of Rhabdonella spiralis; 11 – hyaline lorica of Eutintinnus brandti; 12 – lorica of Codonellopsis schabi composed of a hyaline collar and a hard, agglomerated bowl; 13 – hard, agglomerated lorica of Codonella aspera; 14 – hard, agglomerated lorica of Tintinnopsis levigata. The asterisks mark the regions analysed.
