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> One further question....
> The resource I am using has the Tyrannosauridae listed under Subdivision
> ARCTOMETATARSALIA (Holtz, 1994), which in turn is listed under Division
> MANIRAPTORA (Gauthier, 1986).
I didn't know these taxa (which are cladistic, or phylogenetic, taxa) had
ever been used in the Linnaean system.
> Is this correct? I had thought that the tyrannosaur family would be
> directly under the infraorder Tetanurae,
Tetanurae is also a phylogenetic taxon. Who made it an infraorder?
> along with the Megalosauridae and Allosauridae.
Divisions are basically something traditional taxonomy used when it ran
out of space (something which is not a problem for phylogenetic taxonomy).
> Gads, this can be confusing!!
Do yourself a huge favor -- DON'T USE TRADITIONAL TAXONOMY!
And check out http://dinosaur.umbc.edu/taxa/tetanura.htm
--T. Mike Keesey <email@example.com>
THE DINOSAURICON <http://dinosaur.umbc.edu>