Foraminiferan fossil. Science Image

Ref: 80019439



Coloured scanning electron micrograph (SEM) of the fossilised shell (test) of a foraminiferan. This fossil was found in chalk laid down in the Cretaceous period, between 142 and 65 million years ago, at Rochester, Kent, UK. Magnification: x185 when printed at 10 centimetres wide.