Odontopleura (Sinespinaspis) markhami Edgecombe & Sherwin, 2001 [Odontopleuridae]; AM F117001, holotype, latex cast, Lower Silurian (Llandovery: Telychian), Cotton Siltstone, Cottons Hill Quarry, 10 km NW of Forbes, New South Wales (length of specimen 8 mm).