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New basal "dinosaur" genus classified
Dear All,
First let me say that the "professional" advice was duly noted, but all
it demonstrates to me is that professional insider information (which the
rest of us might not be privy to for years) gives the "professionals" a
distinct advantage. If I had such information, my classifications would be
far more cutting edge. It must be nice to have such "light" to "scrutinize
with" long before the rest of us do. But I don't consider my energies
misspent if I can help explain cladifications to the rest of the world. If
I am creating problems for the "professionals", they certainly have the
power to block my posts (I believe it only takes 3 people according to the
rules). So one of these days my posts could just suddenly stop. So it
goes.
Anyway, this new basal almost-dinosaur "Agnostiphys" (spelling?) is a
great example of a Plesion that is easily inserted. Below is the
classification I posted here about 4 weeks ago, and following that is the
same classification modified to reflect the views of Fraser et al. Note
that I simply inserted a Plesion for the new genus, and I also moved the
{{Ornithischiformes}} marker to show that they are proposing the ejection of
herrerasaurs and Eoraptor from the cladistic dinosauria (which was node 4,
but becomes node 7). The new topology does not require major name changes
with my system (and it can show many alternative toplogies just by simply
recoding).
ORDER SAURISCHIFORMES (on Jan. 2)
1 Lagerpetonidae
2 Lagosuchidae
3 Plesion Lewisuchus
4 {{Ornithischiformes}}
5 Herrerasauridae
6 Plesion Eoraptor
7 Plesion Saturnalia ...
B and other sauropodomorph taxa
C ...
8 Guaibasauridae
9 Coelophysidae
10 Ceratosauridae ....
and the rest of theropods
ORDER SAURISCHIFORMES (on Jan. 31)
1 Lagerpetonidae
2 Lagosuchidae
3 Plesion Lewisuchus
4 Herrerasauridae
5 Plesion Eoraptor
6 Plesion "Agnostiphys" (spell?)
7 {{Ornithischiformes}}
8 Plesion Saturnalia ...
B and other sauropodomorph taxa
C ...
9 Guaibasauridae
10 Coelophysidae
11 Ceratosauridae ....
and the rest of theropods
NOTE: It is possible Fraser's cladogram has Herrerasauridae and Eoraptor
changing places (but I prefer Jaime's view). In any case, this gives you
the overall picture of what is being discussed. If it is too "cluttered", I
apologize to Mr. tetanurae, but I think it eliminates the need for even more
cladistic "nomenclatural" clutter (now and in the future). And by the way,
I did not coin the term plesion or holophyly, both of which have been around
for many, many years.
----- Cheers,
Ken Kinman
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