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.图7：展示产自英国威尔士卡马森郡兰多罗镇塔尔凡农场晚奥陶世凯迪阶上部肖尔胡克灰岩组的新种橄榄星头虫（Staurocephalus oliveae sp. nov.）完整活动颊（librigenae）侧缘小齿（denticles）数量的频数分布统计图，样本量n=36。