NASA just released a micrograph showing a vessel-like object (Fig. 1)
in the scoop of Phoenix Mars Lander. That object closely resembles
blood vessel remains found in a Carboniferous human calvarium fossil
owned by Mr. Ed Conrad of Shenandoah, Pennsylvania (Fig. 2 for
comparison). The amazing thing is these two fossils are wonderfully
preserved for 3 billion years and 300 million years respectively. Who
can do that?

Fig. 1 http://www.nasa.gov/mission_pages/ph..._Sol26_v7.html

Fig. 2 http://www.wretch.cc/album/show.php?...328514833&p=36