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RE: New papers in Acta Palaeontologica Polonica



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\uc1\pard\plain\deftab360 \f0\fs20\cf0 Were do the Enantiornithines branch off, in this cladogram? ( BTW, thanks for the answers for my test post)\par
Cheers,\par
Jean-Michel\par
\par
\par
-----Original Message-----\par
From: Thomas R. Holtz, Jr. [mailto:tholtz@geol.umd.edu]\par
Sent: Wednesday, February 20, 2002 5:36 PM\par
To: dinosaur\par
Subject: New papers in Acta Palaeontologica Polonica\par
\par
\par
Greetings,\par
\par
Three papers of probable interest to the folks here in the latest issue of\par
APP.\par
\par
First, the theropod one (which will strike a familiar chord with some on\par
this list...)\par
\par
Maryanska,T.,Osm\'f3lska,H.,and Wolsan,M. 2002. Avialan status for\par
Oviraptorosauria.Acta Palaeontologica Polonica 47 (1):97 \'96116.\par
\par
A new phylogenetic analysis, mostly at the species level, for coelurosaurs.\par
The tree they find is (condensed):\par
Theropoda\par
  Herrerasaurus\par
  Neotheropoda\par
    Coelophysis\par
    Avetheropoda/Tetanurae\par
      Allosauroidea\par
      Coelurosauria\par
        Tyrannosauridae\par
        Maniraptoriformes\par
          Ornithomimosauria\par
          Maniraptora/Eumaniraptora\par
            Dromaeosauridae\par
            Avialae\par
              Therizinosauria\par
              Clade A\par
                Archaeopteryx\par
                Clade B\par
                  Confuciusornis\par
                  Oviraptorosauria\par
                    Avimimus\par
                    Clade C\par
                      Caudipteryx\par
                      Oviraptoroidea\par
                        Caenagnathidae\par
                        Oviraptoridae\par
\par
So, in short, oviraptorosaurs are nested within the birds.  However,\par
unfortunately, typical "birds" are represented solely by Archaeopteryx and\par
Confuciusornis, and the characters that unite Clade B are quadrate with the\par
lateral cotyla for the quadratojugal (42.1); mandibular\par
symphysis tightly sutured (72.1); maxillary teeth lost (96.2); dentary teeth\par
lost (97.1). The fifth synapomorphy,a large parietal comparable in size to\par
or longer than the frontal (26.1), was recognized under ACCTRAN only.\par
Unfortunately for this interesting hypothesis, characters 72.1, 96.2, and\par
97.1 are known to be absent (that is, the primitive state is present) for\par
many non-cofuciusornithid Mesozoic birds (enantiornithines,\par
ichthyornithiforms, hesperornithiforms, etc.) which share considerable\par
additional derived characters with modern birds which are lacking in\par
oviraptorosaurs.\par
\par
Thus, I would take the precise results of this analysis with a major grain\par
of salt.  Nevertheless, a great wealth of information in this paper.  Also,\par
once again Avimimus and Caudipteryx come out as oviraptorosaurs.\par
\par
-------------\par
\par
Averianov,A.O.,Voronkevich,A.V.,Maschenko,E.N.,Leshchinskiy,S.V.,and\par
Fayngertz,A.V. 2002.A sauropod foot from the Early Cretaceous of Western\par
Siberia,Russia. Acta Palaeontologica Polonica 47 (1):117 \'96124.\par
\par
Pretty much what it says...  Based on the morphology of the partial foot, it\par
is referrable to Titanosauriformes.\par
\par
------------\par
\par
Say you wanted to see a really comprehensive review of the phylogeny of\par
non-avian theropods, and found out that there was a paper written by Currie,\par
me, Makovicky, Norell, Sereno & Sues (and maybe a few others)?  That *might*\par
begin to resemble the importance of the following paper:\par
Luo,Z.-X., Kielan-Jaworowska,Z., and Cifelli,R.L. 2002. In quest for a\par
phylogeny of Mesozoic mammals. Acta Palaeontologica Polonica 47 (1):1 \'9678.\par
\par
Okay, to be even better they could have had a few of the AMNH guys in\par
there...  A BIG (78 pp.) paper with a detailed, generally species/genus\par
level phylogenetic analysis of Mesozoic mammals.  46 taxa, 275 characters.\par
Tritylodonts + Haramyavia, tritheledonts, Sinoconodon, moganucodonts,\par
Haldanodon, Haldrocodium, and Kuehenotherium are progressively closer sister\par
taxa to crown group mammals.  Crown group mammals split into monotremes and\par
their extinct allies, and the clade comprised of eutricondonts,\par
multituberculates, various other Mesozoic forms, and Theria.  They point out\par
various alternatives which are slightly longer than the most parisimonious\par
(for example, a monophyletic Allotheria comprised of multituberculates and\par
Haramyavia, which winds up outside of crown-group mammals).\par
\par
A must-have paper for Mesozoic mammal workers.\par
\par
\tab \tab Thomas R. Holtz, Jr.\par
\tab \tab Vertebrate Paleontologist\par
Department of Geology\tab \tab Director, Earth, Life & Time Program\par
University of Maryland\tab \tab College Park Scholars\par
\tab \tab College Park, MD  20742\par
http://www.geol.umd.edu/~tholtz/tholtz.htm\par
http://www.geol.umd.edu/~jmerck/eltsite\par
Phone:\tab 301-405-4084\tab Email:\tab tholtz@geol.umd.edu\par
Fax (Geol):  301-314-9661\tab Fax (CPS-ELT): 301-405-0796\par
\par
}