Hi AdminNosy,
I'm not taking issue with your closing
birds, bats, pterosaurs -- and fused backbones.
I
thought the question fit there because I wasn't intending to get into the origins of anything...just asking for information on two types of backbones. However, I can certainly see how it would NOT qualify as a coffee-house topic.
I just wanted to make sure you knew I wasn't pulling the "coffee-house dodge." I've never had a problem with the PNT process.
I
was trying to get some facts together for a possible PNT, though (and was having trouble getting the info through Google). The one link posted by FliesOnly has made me question the basic premise of my original idea, anyway.
--Jason