Sea urchin

Starfish in a sea urchin

Here are two small Upper Cretaceous sea urchins.These small, high-domed urchins are well-detailed, with the central mouth and the anus clearly visible in the specimen on the left.

The five radial sections are also very clear and reflect the common ancestry between sea urchins and starfish. These five radial sections are the equivalent of the five arms of a starfish, joined at the tip to form the shell or ‘test’.

Find out more on the echinoderms page.

Common name

Sea urchin

Scientific name

Galerites albogalerus

Type

Echinoderms > Sea Urchins


Strata

Chalk, Upper

Time period

Upper Cretaceous

Age

70 million years

Where found

Unknown

Found by

V.H.W Wingrave

Museum

Lyme Regis Museum

Accession number

L.1973.344