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Re: mesosaurs, what are they?
----- Original Message -----
From: "david peters" <firstname.lastname@example.org>
Sent: Friday, February 04, 2005 11:37 PM
Subject: mesosaurs, what are they?
What are mesosaurs?
Why can't mesosaurs be a basal sauropterygians, perhaps close to
I'll not pretend to understand the recent research on Paleozoic sauropsid
phylogeny. I can only say that sauropterygians always come out as
crown-group diapsids (though whether they're lepidosauromorphs or
archosauromorphs...), while mesosaurs are something completely different.
They have now found a home at the base of... erm... Anapsida =
Pantestudines; in other words, they are very basal sauropsids. See here
"the position of Mesosauridae follows Modesto (1999)".