The ornamental design for a displayscreen with an animated graphical user interface, as shown and described.
FIG. 1 is a front view of a first image in a sequence for a display screen with an animated graphical user interface, showing my new design; and,
FIG. 2 is the second image thereof.
The broken line showings of various features of the animated graphical user interface are included for the purpose of illustrating environmental structure and portions of the article. The broken lines form no part of the claimed design.
The appearance of the animated graphical user interface sequentially transitions between the images shown in FIGS. 1-2. The process or period in which one image transitions to another forms no part of the claimed design.