Fig. 7 in A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy

Fig. 7. Chart showing the frequency distribution of numbers of denticles on lateral margins of complete librigenae of Staurocephalus oliveae sp. nov. from the upper Katian (Upper Ordovician) Sholeshook Limestone Formation at Talfan Farm, Llanddowror, Carmarthenshire, Wales, UK. n = 36.