Errr superdrag, or supergrass.....
the later I guess sound more like T-rex than the former, but still not at all like T-rex.
Cant think anyone that is really T-rex like, perhaps Bowie and his followers Suede?
I like t-rex, but when a T-rex song comes on the radio there is not a moments doubt in my mind its a T-rex song, even if its a more obscure song I have only heard once or twice.
I think jeepster does sound like ride a white swan and so on, just at different speeds.