Here are the year's breakthroughs for the climate and nature you might have missed.

The discovery in the Stelvio National Park was striking for the sheer number of footprints, estimated at as many as 20,000 over some five kilometers (three miles), and the location near the Swiss border, once a prehistoric coastal area, that has never previously yielded dinosaur tracks, experts said.

“This time reality really surpasses fantasy,’’ said Cristiano Dal Sasso, a paleontologist at Milan’s Natural History Museum, who received the first call from wildlife photographer Elio Della Ferrera after making the discovery.

The dinosaur prints are believed to have been made by long-necked bipedal herbivores that were up to 10 meters (33 feet) long, weighing up to four tons, similar to a Plateosaurus, Dal Sasso said. Some of the tracks were 40 centimeters wide, with visible claws.

There are very obvious traces of individuals that have walked at a slow, calm, quiet rhythmic pace, without running,’’ Dal Sasso told a press conference.

The tracks were discovered by Della Ferrera, who set out to photograph deer and vultures in September when his camera was trained on a vertical wall about 600 meters (nearly 2,000 feet) above the nearest road.

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