More than 100 marks left by a lizard called Isochirotherium - also known as the hand-beast - 270 million years ago have been uncovered on an island.

Dr Neil Clark, who has previously found evidence of ancient reptiles and dinosaurs on Skye, made the finds along with amateur enthusiasts on Arran.

The komodo dragon-sized creature English name was inspired by its unusual hand-like prints.

Footprints were previously found on Arran, but the latest discoveries are the largest to be indentified so far.