Four Texas Spiny Softshell Turtles (Trionyx spiniferus emoryi) were collected near St. George, Utah. This represents a range extension of 65 km northward into Utah from Nevada.
Roby, Carlos Y. and Loveless, Earl C.
"Range extension of Trionyx spiniferus emoryi into Utah (Reptilia),"
Great Basin Naturalist: Vol. 37
, Article 11.
Available at: http://scholarsarchive.byu.edu/gbn/vol37/iss2/11