Re: the bipedal ptero-challenge

[DinoBoyGraphics@aol.com]

<I had noticed that pterosaur manus (front foot) imprints are consistently much 
more impressed into the substrate than are imprints of the pes (back foot).>

    Indeed, this is true of the Alcova specimens as well.  It's also worth 
noting that in at least those trackways, the forelimb impression has roughly 
the same surface area as the rear impression, so the weight distribution is 
truly greater anteriorly.

Scott