You've never heard of, oh, what is the term for ichnites that appear a layer or
two down from the original skin impression layer?
Undertracks/-prints.
Even more pertinent is the point that a fossil is more than just bones in the
case of Solnhofen fossils. The soft tissues of the creature are still there,
Yet bedding planes follow the body contours to such an extent that sometimes the bones have to dug out.
If only one or two specimens showed the details I propose, then yes, blame the
interpreter. But when dozens do. And when they don't add steps to phylogenetic
analyses. And the resulting hypotheses explain more than pure figments not based
on fossils (colugo lizards, for instance).
A just-so story is not evidence.
Or when deep chord wing membranes are sought but not found.
Then this might be further evidence against deep-chord wings. (Or not.)
Or a uropatagium that stretches from one leg to the other without touching the tail,
or a propatagium with actinofibrils,
or mistaking an
anurognathid embryo for an ornithocheirid, or reconstrucing a pterosaur skull
upside down, or finding a pterygoid where none was notice before, or a phalanx
four submerged beneath legs.