Ascaris lumbricoides
Archeologists discovered 2,000-year-old shit sticks in a latrine at Xuanquanzhi 悬泉置, in the town of Dunhuang, Gansu. Xuanquanzhi was a Han dynasty military base and relay station (111 BCE – CE 109) at the eastern end of the Silk Road. Analysis of preserved fecal matter found on cloth covers wrapped around the ends of sticks revealed the remains of roundworm ("Ascaris lumbricoides"), whipworm ("Trichuris trichiura"), tapeworm ("Taenia solium"), and Chinese liver fluke ("Clonorchis sinensis").