Maybe it is just me but I'll persist so we can get the topic clarified.
It is possible that you are making one of two points:
1) If organisms remain the same (or similar 'enough') over geologic time that, by itself, represents a problem for biological evolution.
This is the point that at least a couple of others have assumed you were making and have pointed out to you that they believe it to be in error.
2)Some organisms staying pretty much the same over long periods of time shows that
no organisms have changed in ways that you consider 'significant' (i.e.,. between "kinds")
This is the new point that you suddenly raised when you brought up transitionals.
They are not the same point.
Now which point are you trying to make? When we know that we can maintain the focus of this topic.
If you don't wish to clarify I will use my judgment and what others have understood to focus the topic.