[sunburn]

Can you identify? It's almost round, with a very tough but not brittle shell. Like a medium density plastic. Very firm.

It's about an inch in diameter. Found in the grass, maybe 20 or 30 feet from a marsh. I looked up snake eggs, lizard eggs, & alligator eggs. It's similar, but not exact. It is not like any bird egg I've ever seen.

Perhaps dropped by a bird? Or maybe a traveling animal? What do you guys think?