An amateur photographer has filmed what he believes was a Tasmanian tiger running across a field in South Australia’s Yorke Peninsula.

A video of the alleged sighting was uploaded to YouTube earlier this week and shows a silhouetted, four-legged animal galloping across a paddock.

Schoolteacher Paul Day, 52, said he filmed the suspected thylacine in farmland near Moonta while location scouting for sunrise photography, The Advertiser reports .

His claim marks the latest in a series of hundreds of alleged sightings of the extinct carnivorous marsupial.

Mr Day said he at first took the creature to be a fox or a dog, but grew to suspect it was a Tasmanian tiger after watching video of another alleged sighting.

“I thought to myself, ‘If that’s not a thylacine I’ll eat my hat’,” he told The Advertiser .

Thylacine Awareness Group of Australia founder Neil Waters said the animal captured in the video bears all the hallmarks of the carnivore, the last living specimen of which is believed to have died in the Hobart Zoo in 1936.

“This animal has a tail with a thick base, just like a thylacine, and there appears to be some discolouration on its back,” he said.

“Then it has this gait that is so peculiar, but it’s just like people have described the thylacine movement.”