“…Reaching a thickness of 100–247 m (Powell et al, 2000) in the West Midlands, the Enville Member has been proposed to be of Westphalian D to Stephanian age within regional European stratigraphy (Waters, Glover & Powell, 1994; Glover & Powell, 1996; Johnson, Glover & Turner, 1997; Besly & Cleal, 1997; Powell et al, 2000), which correlates to the late Moscovian to Kasimovian of the global Carboniferous stratigraphy (Gradstein, Ogg & Schmitz, 2012). The Enville Member is the upper of the two members of the Salop Formation, the other being the Alveley Member (formerly Keele Formation), the source of the Alveley track assemblage (Haubold & Sarjeant, 1973; Haubold & Sarjeant, 1974; Tucker & Smith, 2004).…”