The martian footmark!

The martian rover on it's 43rd mission over a period of five centuries picked up a number of materials with scientific interest; but, out of them all stood this 3-D photograph... of a small mark on the planet's surface... in the northern hemisphere. With earthly experience, some one can misread this mark as a human foot print. All sorts of scientific dating procedures have indicated its age to be close to 250 million years... a close contemporary to the Jurassic age of Earth... 2 scientist at the international Center of Paleontology and Astronomy are pouring over the photographs... both are in deep thought interrupted by occasional brief words of observation or infrequent questions, which sound more like an introspection rather than a debate with the colleague..... (this should glorify the power of deductive reasoning!!!).... The stage should be like a Human skull from the broadside.... A drama