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During construction of the Metro Purple Line extension, workers stumbled across the remains of an ancient elephant.

The first discovery, made just before Thanksgiving, was of a 3-foot section of tusk fragments, as well as fragments of a mastodon tooth, found at a depth of 15 feet at the Wilshire and La Brea excavation site, said Metro spokesman Dave Sotero.

Late afternoon Monday, a paleo-monitor hired to look out for bones and fossils came across a partial skull and tusks, believed to belong to an ancient elephant, Sotero said. The second discovery was made within about 10 feet of the first.

The mammal fossils that were found are at least 10,000 years old and are from the Ice Age, Sotero said. Further analysis of the teeth will help paleontologists identify what type of ancient elephant it was, Sotero said.

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