"shows creatures entering and leaving the fossil record, over great periods of time, with the same morphology."
I guess the same thing can be said of photographs of me as a kid.
By your standard, there is no proof the kid in the pictures is an adult, since we don't see a photo of him actually growing.
"These are very nice pictures in celluloid, and there are a lot of them. But just which exactly of these frames is supposed to show the motion?"