The ornamental design for a displayscreen with an animated graphical user interface, as shown and described.
FIG. 1 is a first image in a sequence of a display screen with an animated graphical user interface showing our new design;
FIG. 2 is a second image thereof;
FIG. 3 is a third image thereof;
FIG. 4 is a fourth image thereof;
FIG. 5 is a fifth image thereof;
FIG. 6 is a sixth image thereof; and,
FIG. 7 is a seventh image thereof.
The appearance of the animated user interface sequentially transitions between the images shown in FIGS. 1-7. The process or period in which one image transitions to another forms no part of the claimed design. The broken lines showing the curved plane as well as the circular plotted points representing the specific volume of the molding material illustrate portions of the animated graphical user interface that form no part of the claimed design. The outermost dash-dot-dash rectangle as well as the dash-dot-dash lines showing the monitor stand and base in all FIGS. are included for the purpose of illustrating environmental structure and form no part of the claimed design. The innermost dash-dot-dash rectangle showing the display screen as well as all other broken lines within the display screen in all FIGS. showing portions of the animated graphical user interface form no part of the claimed design.