Senter has shown that there is a "birdlike cluster" which is "morphologically continuous". When we look at what creatures are included in the birdlike cluster, we see that they are all "maniraptors".
This is precisely one of the major points I have been making. The group labeled "maniraptors" are in fact flying and secondarily flightless birds. (Of course I am not the only one who has made this point).
I am also saying that the flying birds within the birdlike cluster developed from pterosaurs. And the flightless birds within the birdlike cluster developed from the flying birds within the birdlike cluster.
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