Ludlow epoch

Ludlow ( ) is a market town and civil parish in south Shropshire, England. It is located south of Shrewsbury and north of Hereford, on the A49 road which bypasses the town. The town is near the confluence of the rivers Corve and Teme.

third series and epoch of the Silurian system and period

In the geologic timescale, the Ludfordian is the upper of two chronostratigraphic stages within the Ludlow Series. Its age is the late Silurian Period, and within both the Palaeozoic Era and Phanerozoic Eon. The rocks assigned to the Ludfordian date to between 425.0 ± 1.5 Ma and 422.7 ± 1.6 Ma (million years ago). The Ludfordian Stage succeeds the Gorstian Stage and precedes the Pridoli Epoch. It is named for the village of Ludford in Shropshire, England. The GSSP for the Ludfordian is represented as a thin shale seam, coincident with the base of the Leintwardine Formation, overlying the Bring

In the geologic timescale, the Gorstian is an age of the Ludlow Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that is comprehended between 426.7 ± 1.5 Ma and 425.0 ± 1.5 Ma (million years ago), approximately. The Gorstian Age succeeds the Homerian Age and precedes the Ludfordian Age. The age is named after Gorsty village southwest of Ludlow. The base of the age is marked by Saetograptus (Colonograptus) varians. The type section is located in a quarry in the Elton Formation at Pitch Coppice, Shropshire, United Kingdom.