Well, the oredonte skull was so quick, here is another one.
I bought this on eBay listed as a fossil feather and quite inexpensive.
When it arrived and I saw it close up, I realized it was likely a leaf, probably fern.
This would be fine also. What do you think? Species?
Interesting that it was entombed in an erosion rounded rock, fairly soft material,
and that it fit and split perfectly, even to the curve in the rock/leaf.
Seems unlikely that someone picked up a rock and
then tried to split on a chance, and got this result. But would it split naturally and
stay together over a period of time?
I inquired of the seller where he got it. He got it at Goodwiill ! (which explains why it
was so inexpensive). I doubt whoever found it realized it would one day show up
at Goodwill. At least it ended up in a good(?) home.