(Need Help) Interesting Lizard-shaped fossil with possible inscription?

[TennesseeRockHunt]

This is a rock/fossil found in grandparents rock bed. I believe it to be a fossilised lizard on top of a rock. When I studied it, I noticed the lizard shape and, on the bottom side, what seemed to be an engraving that looked interesting. I tried to write down the symbols I saw and research them and came up with something similar to the Mayan writing for lizard. Looking for any advice/input on this intriguing piece. Thanks!top view of fossilup-close side view of fossil
top-down view of bottom side containing what I believe to be an engravingScreenshot of Mayan representation of a lizard, close to the engraving on the bottom

Edited February 11, 2017 by TennesseeRockHunt
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[Darktooth]

Welcome to the forum from New York! What I believe you have, is a concretion or nodule with some suggestive markings. 

[TennesseeRockHunt]

Sorry, but I'm very new to fossil research other than what I've learned by other ameteurs. Could you explain what that is a little more in layman's terms? Lol

[fifbrindacier]

HI from France. What i see here is a nodule or concretion and the marks must be cracks that occurred during the formation of the rock, or maybe by erosion. I am not expert, but i can say that the concretions are formed by the aggregation of different elements, stalactites for example. A nodule is a globulous concretion which composition or structure is different from the ones of the rock in which it is situated.

Do that answer your question ?

[Fossildude19]

I agree - Concretion. 

Sorry, no lizard fossil.

 

 

No engraving, either:

 

 

I see no too marks, and no evidence of intentional shaping.

Regards,