Theoretically... With the tools we have you might be able to import a sheet and resize/reposition a mask to get the effect you're looking for...
That would be absolutely absurd of course practically speaking from an implementation and performance perspective.
It would be much more reasonable to import individual frames as needed instead. If you're in control of the distribution format and method, you could use the file name to contain metadata such as animation name, order, length ect. whether it is online (ajax) or on the local drive (nwjs). Or is nwjs even necessary anymore? I haven't been active for a while, but I vaguely remember something about web apps getting access to the local files.