The mean selected temperature of Zygaspis quadrifrons in a thermal gra
dient was 23.1 degrees C, similar to other amphisbaenians. Body temper
atures of amphisbaenians are lower than those of other squamates, but
are similar to those of fossorial snakes and lizards, apart from skink
s. The precision of thermoregulation in Z. quadrifrons was low; body t
emperatures had a SD of 3.8 degrees C and an interquartile range of 6.
0 degrees C.