Cities with paleo-philatelic related names are often found with the city name in a hand cancel device. There are also other devices used to cancel mail such as hand rollers for large flat items, precancel devices and automated letter canceling machines as examples.
Fossil Oregon – Machine Cancel
This postal card from Fossil, OR (03/30/65) to the Sunset Magazine company in Menlo Park, CA mailed at the domestic postcard rate of 4 cents, was canceled by running it through an automated machine along with other letter mail.
The Mesozoic Times 