Re: Gnathostome phylogeny (Paleo Find)

["David Marjanovic" <david.marjanovic@gmx.at>]

>      The phylogeny of gnathostomes may well be in for a little bit of
> shaking up, but the nomenclature should be pretty steady.  We will
probably
> still have 5 classes of gnathostome fishes, even if the order of
> phylogenetic splitting needs changing.

Well, Actinopterygii and Sarcopterygii are traditionally, AFAIK always,
subclasses of Class Osteichthyes. Your approach is pretty unique AFAIK.
Well, the 5 groups will probably remain, except for Acanthodii which is said
to be possibly paraphyletic (whatever the exgroup is).

>       Whether the new evidence will threaten the osteichthyes group (4+5)
> remains to be seen.  However, I think that the teleostomi group (3+4+5) is
> probably in deep trouble,

sure

> and Teleostomi would become a synonym of
> Gnathostomata if Acanthodea are indeed the most primitive of the five
> classes (as some recent evidence indicates):

News to me.

Er, eh, yeah, _dinosaurs_ are sarcopterygians 8-)

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