 Murchison thus took the Ludlow Bone Bed as the base of his Devonian System, although over a century later this boundary was to be moved a little higher, the overlying rocks being ascribed to the Pridoli.The science of geology has taken a number of local names from these studies and now applies them worldwide, in recognition of the importance of this area to scientific understanding, for example Ludlow Series.The site is now an SSSI (Site of Special Scientific Interest) and still attracts international studies.