Is this a fossilized nut, pecan?

[Capan Smiff]

I found this in an Indiana riverbed and I’m dying to find out what it is exactly. 

[debivort]

I believe you have a rock that just happens to look like a pecan, sorry to say.

[Denis Arcand]

Rocks, like clouds, present numerous opportunities, unveiling recognizable forms upon closer examination. Just as clouds take on diverse patterns, rocks also display varied shapes that spark our creativity. For instance, a mountain rock's rugged edges might mirror fortress walls, while a river rock could mimic a seashell. Similar to interpreting cloud shapes, identifying familiar figures in rocks engages our imagination—such as spotting a rock resembling a pecan.