title: Temperature-Independent Morning Emergence in Lizards of the Genus Phrynosoma.
abstract: An investigation of the relationship of morning emergence and body temperature in Phrynosoma demonstrated a rhythmic anticipation of conditions favorable for normal activity. Such a rhythm offers a mechanism by which ectothermic reptiles can use safe nocturnal shelters without loss of activity time in the morning.
authors.forename: J E
authors.initials: JE
authors.lastname: Heath