What if you found a rock- and it had this pattern on it?  Would you think that the action of wind and sand and erosion had produced it?  Or would you think that some odd crystal process had produced it? Since it has regular five and ten sided symmetry, crystals are out.  No natural crystal form produces regular five sided or ten sided figures.  That would mean that either somebody carved it, or it was the result of some other biological process. NASA would have you think that this was just some random bit of erosion, but it makes no sense that they would claim this.  After all, a discovery of this magnitude would mean lots of funding for future Mars exploration.
Well then, what if you found a rock that had this pattern on it?  It is set into the rock, and the patterns are made of uniformly thick lines.  It is bilaterally symmetrical, having right and left halves that are mirror images of each other. What sort of erosion would cut this pattern into a rock and leave such fine, precise lines for the oval and spokes?  What erosion process would make such a perfect triangle with such perfect lines so carefully placed inside it? Once again, NASA dismisses this and does not even bother to explain it.  No word on what it might be or what might have produced it.
Okay, what about a leaf pattern?  Not just a leaf shaped pattern, but one that is made of uniform lines and shows what appears to be segments along their lengths. It would be extraordinary to find one of these on a rock, and to find an explanation for how it could have gotten there.  After all, erosion is a blunt mallet and does not produce fine, symmetrical features like this on a regular basis.  But this is only the tip of the iceberg. As most people know, if something is improbable, the chance of it happening many times becomes wildly more improbable   So finding one of these patterns is unusual, but what if you found-
FIVE of them, on the same rock, and arranged in a perfect pentagram?  Now we are talking about a very improbable event.  After all, crystals do not create these forms, and erosion most certainly does not! You may as well expect to find your name written in Greek and Egyptian on a random piece of stone.  Once again, this is  five sided form, and it shows what is called pentagonal or five fold rotational symmetry.  This can only be the result of either human intervention or biological processes. So where are all these odd features located?

Here is the pattern compared to the original form.  The spherule it is on was rotated in a 3D modeling program because it is on the upper right edge of the spherule.  Compare the figure on the left with the two images- plain and marked up- on the right.  You can see that even though the image is blurry, the exact form is present.

Now compare the original, unrotated spherule to the pattern in this view- this is a cross-eyed stereo image and you can see the pattern literally sticking up off the surface on the right limb near the top.  Once you have seen it, you will be forced to admit that something other than minerals or erosion produced these markings.

The original NASA/JPL images of this sea urchin fossil are located here at their web site.

Now, let's move on to the triangular feature with the oval and lines.  This is a most unusual shape and form; complex and once again bilaterally symmetrical.  These are not erosion features or crystallization features.  Look at this:

I am no longer certain what type of organism this is.  However, it is a fossil of something, and it is on Mars, and it appears to have been in the same environment as the urchins and other organisms, so it was aquatic.  Clearly, this pattern did not get put there by random erosion.  Just as clearly, this is not a crystal form.  The original image is from Opportunity, Sol 015, and is here at the NASA/JPL web site.

What about the flower petals?  Those are on a rock that was originally buried near a slab in the Endurance Crater geyser field.  When Opportunity ran over the slab, there was a hollow under it caused by the geyser washing it out.  The slab tipped into the hollow and revealed this dirty but very nice specimen.

This pattern is once more raised and of uniform line width.  It shows pentagonal symmetry- if you rotate the figure by 72 degrees, it exactly overlaps itself.  This is a biological product, not a mineral and not from erosion.  If you look at the cross eyed stereo image above, you can see that the figure is indeed raised and that this is not  trick of lighting.  On Earth, there are fossils called crinoid roots or crinoid holdfasts that are literally identical to this fossil.  The Mars fossil is on the left, the pattern in the center, and the terrestrial fossils on the right (below).  The original fossil was located on Sol 111 and is found here on the NASA/JPL web site.

Here is a very clear symmetrical pattern that shows up on a few later sols from Opportunity.  This particular image is from Sol 593.  It is clearly a trilobite.  Note that this is only one of many that show up over Sol 593 and Sol 598.  The original image is here at the NASA/JPL web site.

When you find multiple copies of the same pattern on different rocks, you have a clue that these rocks might be fossils.  When you find that not only is the same pattern present, but it is larger on large specimens and smaller on small specimens, you have support for the idea that it grew with the specimen, and not that it simply eroded on it.  This is the case below.

This pair of spherules is from Sol 023, Opportunity microscopic imager.  You will note that the larger spherule on the left has the pattern, but the smaller one on the right does as well.  Now, the larger spherule has a large copy and the small spherule has a small copy.  But other spherules also exhibit this complex pattern.  To suggest that erosion somehow wore out precise gaps between the "fingers" of this hand print pattern again and again is ludicrous.  The original image is here at the NASA/JPL web site.

This spherule has the same handprint pattern but it is facing upwards instead of down.  This is the Sol 014 urchin with the complex pentagonal sunburst pattern on its upper right limb.  The light is washing it out in this view.  This makes three spherules with this pattern. Are there more?  Yes.

Here is a spherule from Sol 028, also taken by Opportunity's microscopic imager.  Although this one is more worn, the markings are still clear., and this is a fourth handprint feature on a spherule.  Are more to be found?  Indeed there are.
But now, here is another specimen, showing the same handprint in fine detail, from Sol 544.  It is not a coincidence that this same pattern keeps showing up on these spherules.  This is clearly the result of biology and not random erosion.

I will be adding many more examples as I have located hundreds of them, and many are perfect duplicates.  What are the odds that two or three or 19 rocks would have exactly the same features, all symmetrical and all precisely in scale?  It does not happen at random.  It only happens due to biology.  This is proof that there are fossils on Mars, and that complex life existed there.  It also should serve as a warning that it is very likely that present day living organisms are on the planet, and that a sample return mission could contaminate the Earth with unknown bacteria or fungal organisms.

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