In the vein of recent
discussions involving enigmosaurs and alvarezsaurids, I figured I'd present a
similar case as an example of how easy it is to make an alternative
phylogeny. This phylogeny is supported by good synapomorphies, but is
less parsimonious than the currently accepted one.
Congratulations!!! =8-) Impressive
list! 14 characters is more than the 13 for Alvarezsauria! ;-)
9. double-headed quadrate
In confuciusornithids, oviraptorids and probably
Chirostenotes. Would help explain why Sinornis, Patagopteryx and
hesperornithiformes have single-headed quadrates.
14. manual ungual II much smaller than
Another synapomorphy indicating Ingenia the
confuciusornithid sister group, not known in any other
Apart from Compsognathidae and Mononykinae
at least. :-)
This makes the so far unnamed clade Enigmosauria
+ Paraves the Pygostylia.
BTW, has someone meanwhile found out who
defined Pygostylia when? I haven't. Thanks in advance for