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25 October 2017, 17:13
Scientists have discovered evidence that a huge dinosaur - an ancestor of the T-rex - roamed in Africa 200 million years ago.
Footprints left by a "megatheropod" have been photographed by professors in South Africa after their discovery in the kingdom of Lesotho.
Megatheropods are an earlier species that turned into the Tyrannosaurus rex.
Scientists believe the photographs show a link to the T-rex, which lived between 85 million and 65 million years ago .
:: Largest dinosaur to walk Earth was length of three London buses
British team member Dr Fabien Knoll, from the University of Manchester, called the discovery "very exciting" and explained that it sheds new light on what it could mean for other species.
She said: "It really would have been top of the food chain."
Each of the three footprints measured 57cm (22.4ins) long and 50cm (19.7ins) wide.
Megatheropods are a larger version of theropods, which were meat-eating two-legged dinosaurs.
It was described as a "significant find" by co-author Dr Lara Sciscio, from the University of Cape Town.
"Globally, these large tracks are very rare. There is only one other known site similar in age and sized tracks, which is in Poland."
The study has been published in the Public Library of Science One journal (PLOS).
(c) Sky News 2017: Dinosaur footprints four times bigger than a lion are found in Africa