58 Mayer, MoUusques tertiaires du Musee federal de Zürich. 



S 

 ü 





I in (N 



'— N ,_^^_^, ,co ,^co CO CO eo 



•S eo^co^eo, | =o^ | | | | 



a> ^^^^^OJ ^^C<1 (M (M (N 



E5 



