Ichthyosaur

Additional images

Reading bones

This is a 7cm wide caudal (tail) bone from an ichthyosaur that would have been about 4.5 metres long.

We know where this vertebra came from along the animal’s backbone because the rib facet, where the rib articulated against the vertebra, changes its location on the side of the vertebra. Near the head, on the dorsal vertebra, the rib facets are located high up on the side, near the neural arch, but towards the tail the facets move down the side of the vertebra and fuse together to become just one..

Find out more on the reptiles pages.

Common name

Ichthyosaur

Type

Vertebrates > Reptiles > Ichthyosaurs


Strata

Lower Lias

Time period

Lower Jurassic

Age

200 million years

Where found

Lyme Regis area

Found by

Unknown

Museum

Lyme Regis Museum

Accession number

L.1973.198