|Location||Redcar and Cleveland, North East, England|
|Area||40.3 ha (100 acres)|
|Governing body||Natural England|
|Website||Map of site|
Boulby Quarries (grid reference ) is a 40.3 hectare geological Site of Special Scientific Interest in Cleveland, England notified in 1989. It is located close to the coast and the village of Boulby.
In England SSSIs are designated by Natural England and Boulby Quarries is one 18 SSSIs in the Cleveland area of search. The site is identified as being of national importance in the Geological Conservation Review.
The fossil content of Boulby Quarry is particularly important with two plesiosaur species (Eretmosaurus macroptera and Thaumatosaurus zetlandicus), an ichthyosaur Ichthyosaurus crassimonus and the only Upper Lias pterosaur known in Britain, Parapsicephalus being found at the site. The fossil are found in the bifrons zone, and although not abundant, it is very different from surrounding fossil sites.
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