In 1977, a sculptor named Patricia Renick unveiled a piece called Triceracopter: Hope for the Obsolescence of War at Cincinnati's Contemporary Arts Center. It is literally the body of a decommissioned helicopter melded with a fiberglass Triceratops head and limbs.
The meaning of the piece is pretty clear - it plays off the durable old conception of dinosaurs as failed monstrosities, the most outlandish critters on the evolutionary discard pile. A bit on the nose, and while I disagree with dinosaurs being saddled with this reputation - no group of animals who dominated terrestrial ecosystems for 120,000,000 years has much to apologize for - you can't fault the craftsmanship. And the melding of organic and inorganic, animal and machine, is always arresting. Triceracopter would look pretty imposing in my front yard. If I had the dough, I might even buy it, as it's been on the market for about a year.
Lots of info on the piece and its creator on-line. Here's a 1978 Cincinnati Magazine article about the piece. Triceracopter also has its very own Facebook page and Flickr stream. Oh, and it has a sister named Stegowagenvolkssaurus. Renick, who passed away three years ago, was interviewed in 2003 by Sculpture Magazine. Finally, here's a post about her life's work at a blog called Terrible Tiramisu.