Existence of Impossible fossils

Fossils, as we learned in grade school, appear in rocks that were formed many thousands of years ago. Yet there are a number of fossils that just don't make geological or historical sense.

A fossil of a human handprint, for example, was found in limestone estimated to be 110 million years old. What appears to be a fossilized human finger found in the Canadian Arctic also dates back 100 to 110 million years ago.

And what appears to be the fossil of a human footprint, possibly wearing a sandal, was found near Delta, Utah in a shale deposit estimated to be 300 million to 600 million years old.