In examining the latest deposits, in various quarters of the world, it has everywhere been noted, that some few still existing species are common in the deposit, but have become extinct in the immediately surrounding sea;
Munduko alde ezberdinetan metaketarik oraintsukoenak aztertzean, nonahi ikusi da oraindik existitzen diren espezie banaka batzuk metaketan ere badirela, baina iraungi egin direla alboko itsasoan;