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Re: Quadraped Sailbacks-All non-dinos?

>Okay - Dimetrodon, Edaphosaurus, and its relatives are not dinosaurs, nor
>reptiles (under cladistic taxonomy), but are primitive representatives of
>the synapsids (mammals and their ancestors).

Weren't the Synapsids reptiles (hence the name "mammel-like reptiles")?

This leads me to the question, where do we draw the line between reptiles
and mammels? What features of modern mammels were known to be present in

I hope this isn't getting too far away from dinosaurs to be of interest to
this group.

James Shields/jshields@iol.ie
And when the ark was finished Noah said unto Elvis, "What do you reckin?"
And Elvis checked out his own cabin and shook his head saying "poky".
And so did they knock several walls through and install a jaccuzzi.
And when it was all done Noah scratched his beard and said, "We don't have
room for all the animals now."
And Elvis perused the livestock list and in his wisdom said, "Lose the
        -Robert Rankin, The Suburban Book of the Dead