I disagree only because I found coral a few times when I was growing up near the Louisiana-Texas border. I found it deep in the woods where no one would have put it and it also was found in the dirt but also only a few inches or a couple of feet down. The examples that I found were also well preserved and looked like they could have been placed there recently but there was no way that they were. It was my family’s land and had never been cleared at least in modern times and the nearest ocean was several hundred miles away.
Did you find it “a few times” in the same area? Because then “with other corals and the like” applies.
Well someone had to say it.
No your yards just pleased t seeou.
Coral (I’m not sure if it’s fossilized or not) is a common find in beach pebbles on Lake Michigan. Not surprising, since most of the Great Lakes (excluding Superior) was a shallow inland basin millions of years ago. The dolomite limestone that makes up the bedrock, exposed at places like Niagara Falls in the east and Door County, Wisconsin, in the west, includes fossilized small salt sea creatures.
I find it funny that people are so incredulous about finding a piece of fossilized coral. Used to find the stuff all the time when I was a kid (in north Georgia). If you live in a place that was once underwater, fossilized coral tends to be pretty common.
So yeah, I vote fossilized coral.
Maybe it was carried there by a Swallow?