The holotype of the trigonotarbid arachnid Maiocercus orbicularis Gill, 1911, a junior synonym of M-celticus (Pocock,1902)

摘要

The recently rediscovered holotype of the fossil arachnid Maiocercus orbicularis Gill, 1911 (Arachnida: Trigonotarbida), from the Upper Carboniferous (Pennsylvanian, Westphalian A) of Westhoughton near Bolton, is described and figured from its repository in the Bolton Museum. Its status as a junior synonym of Maiocercus celticus (Pocock, 1902) is confirmed.