Birdshill Quarry
Birdshill Quarry is a Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales. SSSI. Birdshill Quarry SSSI is located approximately west of Llandeilo, and covers . The SSSI citation for Birshill Quarry specifies the importance of the site to be the abundant fossils of trilobites, brachiopods and bivalves in an Ashgill Birdshill Limestone strata of the quarry, incorporated as deposits some 425 million years ago. The site has been dated by reference to microfossil conodonts found in the strata.