Dragonfly insect

Additional images

Miracles of fossilisation

It seems impossible that the delicate wing of an insect could be preserved for millions of years, but under certain circumstances it does happen. They are preserved in very fine mud known as micrite, that settled on the floor of lagoons and ponds. The micrite is so fine that it preserved the detail of the fragile insects. The preservation is good enough to define individual species and relate them to modern relatives alive today. Insects are living fossils and have hit upon a design that makes them one of nature’s true survivors.

Find out more on the insects page.

Common name

Dragonfly insect

Scientific name



Arthropods > Insects


Purbeck Limestone Group, Lower

Time period

Lower Cretaceous


142 million years

Where found

Durlston Bay {module Durlston safety warning}

Found by



Dorset County Museum, Dorchester

Accession number