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>Incidentally, Rossman has also argued that _Quinkana_ is not a
>mekosuchin but a pristichampsid (I'm following Willis there in having
>mekosuchins as a subfamily-level group of crocodylines and following
>Rossman in regarding pristichampsids as a family-level taxon).

Rossmann makes this argument from a purely functional standpoint; every
phylogenetic analysis done to date on Quinkana makes it a mekosuchine.
I've seen Pristichampsus, and I've seen Quinkana - Paul Willis is right.
Quinkana is not a pristichampsine, but a mekosuchine.  Paul regards
mekosuchines as crocodyloids, but not necessarily crocodylids (or
crocodylines).  They come out as crocodylids in my analyses, but just
barely - the difference between Paul's tree and mine is one node.

You're still using Linnean ranks?


Christopher A. Brochu
Department of Geology
Field Museum
1400 S. Lake Shore Drive
Chicago IL 60605

312-665-7633 voice
312-665-7641 fax