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David Marjanovic wrote-
> |-+-Abelisauridae
> | `-Megalosauridae >
> Still? Like in PDW (when that was apparently
mainstream)?
Yes still, though it was never mainstream.
Even in Abelisaurus' original description, it was said to be closest to
Ceratosaurus, Piatnitzkysaurus, Indosaurus and Indosuchus. Xenotarsosaurus
was described as an abelisaurid (along with Abelisaurus and Carnotaurus) with
Similarily, Carnotaurus was described as being closest to other abelisaurids
(Abelisaurus, Xenotarsosaurus, Indosuchus), Noasaurus and
Ceratosaurus. I actually can't recall anyone else who's suggested
abelisaurids are closest to megalosaurids/torvosaurids, though relations to
carcharodontosaurids and spinosaurids have been suggested.
> Based on probably totally different (and
probably much fewer) characters (and not actually a
> cladogram, as not run through a computer), but
strangely similar, isn't it? :-)
Correcting a few characters...
"1 Is not
totally clear in *Confuciusornis*."
It has the derived condition (25-30%) (Chiappe et al., 1999).
"15 *Archaeopteryx* has the famous constriction, but does someone know
about,
say, *Sinornis*?" Sinornis has very poorly preserved crania, but Cathayornis and the Spanish
nestling have constricted roots.
"16 In *Yandangornis* the entire fused metatarsus is narrowed in the
middle
and more proximally. Therefore I gave it 1, even though mt III is expanded at its proximal end. Entire foot of Pygostylia coded after a very good photo *Confuciusornis* (I haven't had a good look at a real specimen for months, but that will come)." I disagree. Yandangornis and Confuciusornis have broad proximal
mtIII's and their metatarsi are not especially narrow proximally, even if that
were the same character.
I also corrected characters 13 and 14 for ornithomimosaurs.
And the result is.....
160 MPT's of 78 steps each.
|-Compsognathidae
|-Bagaraatan |-Tyrannosauroidea |-Archaeopteryx |-Sinornithosaurus |-+-Bambiraptor | `-Dromaeosauridae |-+-Ornithomimosauria | `-+-Troodontidae | `-+-Microraptor | `-Rahonavis `-+-Caudipteryx `|-Nomingia |-Caenagnathidae |-Oviraptoridae `-+-Segnosauria `-+-Alvarezsauridae `-+-Avimimus `-Pygostylia Yandangornis adds no data to the tree (so was
deleted to minimize MPT's), but clades somewhere in the (Nomingia,
Caenagnathidae ... Pygostylia) clade.
* CBL basically is the same as FABL
What do these abbreviations mean?
Crown basal length and fore aft basal length.
Pretty much the mesiodistal length of the base of the tooth crown.
Mickey Mortimer
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