2 questions

[BPC.APA@email.apa.org (Considine, Blaise)]

here's 2 unrelated questions:
1) last week I asked about hadrosaur "hands" and if they were becoming 
hooves. The answer was yes. This leads me to ask how the hadrosaurs 
stacked up along the bipedal-quadrapedal line i.e., were some hadrosaurs 
more quadrapedal than others? Were later forms more quadrapedal than 
earlier ones? (alright so that's 2 questions right there ;)) I quess I'm 
leading up to were hadrosaurs on the way to (re)turning to a quadrapedal 
form?
(I guess I'm thinking of this as a parallel of the evolution of horses' 
hooves)
 
2) Last night's PaleoWorld discussed dimetrodon and the synapsid, diapsid 
split leading to mammals and dinos. Where in this batch are the 
therapsids, which I thought were the forerunners of mammals? Were 
therapsids a branch of synapsids? Am I just out of it?
Blaise "it's Monday morning, and I'm burnt to a crisp" Considine 
[bpc.apa@email.apa.org]