Re: FOUR, THREE, TWO, ONE . . . PTEROSAURS HAVE LIFT OFF!

[jrc <jrccea@bellsouth.net>]

More later, gotta go pick up my grandson.
David, both your statements below are wrong.
Also, the duration of the push off varies among species, but that plus the 
unfolding takes almost exactly the same length of time as a flapping 
downstroke for the same animal.
JimC

Dave wrote:
At manus lift off, the metacarpus would, of necessity, still be
vertical, having just pushed off the earth like a airborne pole
vault. A vertical metacarpus means the wing finger was still in the
vertical plane,