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Geolocation
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Author - title
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Year
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| details | Middle Siegenian | Late Siegenian | Wales(Pembrokeshire) | Allen,J.R.L. et al. Field Meeting: The facies of the Lower Old Red Sandstone, North of Milford Haven, Southwest Dyfed, Wales. | 1981 |
| details | Middle Siegenian | Late Siegenian | Wales(Powys) | Edwards,D. et al. Locality B8, Brecon Beacons Quarry, (Storey Arms), Powys. (In: A Field Guide to Selected Outcrop Area of the Devonian of Scotland, the Welsh Borderland and South Wales. P.F.Friend and B.P.L.Williams, editors) | 1978 |