An unusual skull discovered at a dig in southwestern China in 2010 has now been identified as that of a fierce, wolf-like animal that roamed the Earth more than 6 million years ago, weighing about 100 pounds, with large, sharp teeth and powerful jaws.

The newly discovered species is a prehistoric otter and an ancestor to the modern-day otter, but it was twice as big as its modern cousin, according to the study published in the Journal of Systematic Paleontology.

The discovery was part of a collaboration between the Yunnan Cultural Relics and Archaeological Institute in Yunnan Province, China and the Cleveland Museum of Natural History.

The extinct animal was named Siamogale Melilutra because it shares characteristics with modern otters and badgers, said Denise Su, curator of paleobotany and paleoecology at the Cleveland Museum of Natural History.

“This species has a mix of characteristics of both these animals in its skull and its teeth,” Su explained.

It’s one of the largest otters ever discovered, about “the size of a modern wolf,” she said.

The fossilized skull was found in Yunnan Province and included a cranium and lower jaw that is much larger than that of the modern-day otter.

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The city of Brookhaven's mayor and City Council last week decided to remove the colored panes of glass from the dome of Brookhaven's new City Centre after residents objected to the brightness of the colors, seen here Friday, June 27, 2025. (Reed Williams/AJC)

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The city of Brookhaven's mayor and City Council last week decided to remove the colored panes of glass from the dome of Brookhaven's new City Centre after residents objected to the brightness of the colors, seen here Friday, June 27, 2025. (Reed Williams/AJC)

Credit: Reed Williams/AJC