New Scientist is reporting the discovery of a major new transitional fossil that starts to unravel the evolution of the plastron.
"What's a plastron?"
Plastron is the $5 word for "turtle shell."
I like the reconstructions in the picture above, particularly the second from the left. It reminds me of an Ankylosaurus. I've always loved those things. Too bad turtles didn't keep the spikes...
The sputtering in the post title refers to the sounds that various creationists will make when learning about this.