Wildlife Gardening: Does this look like a turtle egg?, 1 by grampapa

grampapa wrote:
I was digging in a new perennial bed yesterday near our small lake, heard a crunch, and this was in the trowel. I didn't dig any further because I don't want to disturb the remainder of the nest. The egg is about 2.5-3" long. Nothing was developed inside, so I assume it was laid recently. I immediately thought 'turtle', but DH mentioned 'snake'. I looked up what turtles and snakes live in this area. Many of the snakes are live bearers, and some of the eggs are round.

I'm still thinking turtle.