st. louis cephalopod

I was in St. Louis this weekend, and I thought it might be a cephalopod-free zone (sniff), but it turns out that even the spirt of st. louis used to have eight arms. This picture is of a fossil of an early, shelled octopus known as Techniceras. It was found in Missouri.

I don't know what Techniceras needed the quarter for. Perhaps Pleistocene vending machines.