Transformers: Age of Extinction
One of the scenes shot in the Wulong Scenic Area

A Chinese tourism firm has threatened to sue Paramount Pictures after the makers of Transformers: Age of Extinction failed to display a regional logo on-screen.

The Chongqing Wulong Karst Tourism Group made a product placement complaint relating to the Wulong Scenic Area in south west China, which features in a pivotal scene involving Optimus Prime and the dinobots who have adorned the film's trailers and posters.

Large portions of the film were set and filmed in China so as to attract the ever-growing and increasingly alluring box office market there.

Chongqing Wulong marketing manager Li Chu, speaking to China Daily, said viewers were confused by the lack of signage showing the location in which the film is set.

"If we fail to compromise on a proposal that could remedy our loss we will resort to legal procedures," he said of the talks taking place with Paramount.

Since its release two weeks ago, Transformers: Age of Extinction has made $213m (£124m) in China alone, with a further $175m (£102m) in the US and a worldwide total of $576m (£337m). It's opening weekend haul in China was the biggest foreign opening of a film ever.