 At least two geographical locations are named for William Raynolds . The mountain gap where the Raynolds Expedition crossed the Continental Divide between southwest Montana and northeast Idaho is named Raynolds Pass ( 44 ° 42 ′ 40 ″ N 111 ° 28 ′ 11 ″ W ) and Raynolds Peak ( 43 ° 52 ′ 15 ″ N 110 ° 49 ′ 30 ″ W ) is an isolated peak in the Teton Range that was named after him in 1938 . The fossil remains of the extinct gastropod Viviparus raynoldsanus was named by Ferdinand V. Hayden in honor of Raynolds after the specimen was collected in the Powder River Basin during the expedition . 
