Re: Archosaur Origins...was:MESENOSAURUS ERRATA.

[Dinogeorge@aol.com]

In a message dated 8/28/01 4:25:13 PM EST, qilongia@yahoo.com writes:

<< The problem with the these definitions is that they do not take into 
account the fossil record.>>

They shouldn't. There's no need to. The fossils will always find suitable 
stem groups in which to be classified.

<< Secondarily, the term Pisces is not a formal phylogenetic term, and in 
most cases, the historical
 usage of Osteichthyes but the more recent and correct usage of 
Actinopterygii is used for this
 group, the most exclusive group of osteichthyans not including Dipnoi 
(lungfish) and
 Tetrapodomorpha (*Eusthenopteron*, etc...). >>

Gack. The whole point of what I wrote was to keep things simple, at least 
among the larger groups. Leave the taxonomic messes to those who specialize 
in them, >within< the larger groups.