Agatized mushroom maybe

[Yak503]

Would like to know if this is as I thing and agatized mushroom cap. I found it in the Ochoco in central Oregon

[Rockwood]

Short answer. No.

[dhiggi]

Maybe in addition to the “So you think you’ve found an egg...” there should also be a “So you think you found a mushroom...” sticky post.

[Kane]

I'm seeing a nice piece of agate, but not a fossil. 

 

There's only been a handful of reported mushroom fossils, but they do not necessarily resemble the mushrooms we find growing in the woods!

 

Soft body preservation is extremely rare, and generally localized to what are called Konservat-Lagerstatte (areas where the deposition and preservation conditions were just right to preserve soft body remains). With mushrooms, keep in mind that much of them is water, and that this water would dissipate postmortem, and certainly long before the mineralization process that would transform organic material into a fossil. In areas outside of recognized Lagerstatte, soft organic tissue would rot and break down long before it could be fossilized. 

 

So, perhaps not the answer you may have been hoping for, but there are some fossil possibilities in Oregon should any of our other members who know more about the state's fossils chime in. 

[Fossildude19]

2 hours ago, dhiggi said:

Maybe in addition to the “So you think you’ve found an egg...” there should also be a “So you think you found a mushroom...” sticky post.

That would require a paleobotanist/paleomycologist that would be willing to write up a guide for us to post.  

[Mark Kmiecik]

If you want to know why mushroom fossils are extremely rare, just leave a mushroom you bought or picked out in the weather for a couple of days and look at what's left.

[Rockwood]

The converse, a major reason why fossils of them even exist. There bodies contain chitin.