South Wales offers some of the best fossil hunting locations in the UK, with coastal exposures of Triassic and Jurassic rocks similar to those found along the Somerset coast. These deposits provide a wide range of fossil material with generally less competition from collectors.
Fossils commonly found include ammonites, belemnites, brachiopods, and occasional reptile remains, along with shark and fish material. Llantwit Major is a particularly well-known site, noted for its large gastropods and varied fossil content.
Penarth exposes the famous Triassic bone beds, comparable to those at Blue Anchor and Aust, while many beaches in the region provide accessible collecting conditions with fossils often found directly on the foreshore.
Penarth’s north shore reveals red and green Triassic cliffs, pale gypsum and fossil-bearing beach stones. This guide follows the shore north from the pier towards Penarth Head, where loose shell fossils reward careful observation, but tides, unstable cliffs and uncertain collecting permissions demand care. Jurassic, Triassic, Cliffs and Foreshore, Rating: ♦♦♦♦
At Lavernock Point, the coast records a remarkable transition from late Triassic mudflats to an Early Jurassic sea. Shells, ammonites and vertebrate remains occur in different parts of the succession, and the discovery of Dracoraptor hanigani made the locality internationally known. Careful observation reveals both the fossils and the changing environments that preserved them. Jurassic, Triassic, Cliffs and Foreshore, Rating: ♦♦♦♦
At Llantwit Major’s Cwm Colhuw beach, pale limestone ledges and darker mudstones reveal a fossil-rich Early Jurassic sea. Ammonites and bivalves are the main attractions, often preserved as impressions or shells within the foreshore rocks. The striking cliffs and jointed platforms also make this a rewarding place to see how sedimentary rocks weather and break apart. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦
Southerndown’s Dunraven Bay brings together a sandy beach, striking Early Jurassic limestone cliffs and fossil-rich shore platforms. Look closely at the Blue Lias and you can see curved oysters, other bivalves, ammonites and traces of life on an ancient seabed. The changing rocks also reveal how a Jurassic sea spread across an older limestone landscape. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦♦
The old northern quarry at Trefil opens a window into a Carboniferous tropical sea. Weathered limestone preserves corals and shells, while the surviving tracks and quarry faces tell the story of limestone working for the South Wales iron industry. Carboniferous, Disused Quarry, Rating: ♦♦♦
The small fossil tip near Blaenafon is part of the wider Canada Tips mining landscape. Its weathered shale preserves Carboniferous plant fossils, from ribbed stems to patterned bark and rooting organs, offering a close view of the vegetation that helped build the South Wales coalfield. Carboniferous, Spoil Heap, Rating: ♦♦♦
Reclaimed colliery spoil in Bargoed Woodland Park preserves fragments of the Carboniferous vegetation once buried beneath the valley. Ribbed stems, patterned bark and leaf impressions provide a record of ancient coal-swamp plants within a landscape reshaped by mining and restoration. Carboniferous, Spoil Heap, Rating: ♦♦♦
The shingle shore at Gileston, near Limpert Bay, offers a quieter way to look for traces of Jurassic life. Some loose rocks contain shells and ammonite impressions, while small crinoid fragments have also been reported. The interest lies in careful observation of weathered beach stones and in understanding how much older fossils became part of a modern shoreline. Jurassic, Foreshore, Rating: ♦♦
