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It was a dino score!

Some Neanderthal stole seven handmade dinosaur costumes from Bushwick circus venue the House of Yes on Thursday night — robbing performers not only of their outfits but also years of treasured memories, according to the designer.

“They were really cool and they brought a lot of people a lot of joy and now who knows where they’re going to be,” said aerial acrobat Anya Sapozhnikova, who first made the costumes for a Christmas show in 2012.

The thief struck when the costumes — sparkly bodysuits with large masks — were sitting in a box in front the venue on Wyckoff Avenue at Jefferson Street at 10:15 pm, before organizers could bring them inside for an animal-themed dance party headlined by aptly named tech-house duo Monkey Safari, Sapozhnikova said.

A bouncer at the Cobra Club bar down the street later reported seeing someone wearing a dinosaur head around 10:30 pm, she added.

Sapozhnikova said she put 80 hours of work into making the quirky ensembles, which have evolved to become a House of Yes staple that sometimes pop up in several different shows in a single week.

“It was very sad because they’re such a House of Yes thing,” she said.

The prehistoric props are so beloved, the venue will cough up a $300 cash reward — possibly more than “The Good Dinosaur”’s entire box-office take — for their return with no questions asked.

It is not the first time a crook has stolen one of the House of Yes’s out-of-the-box creations — a few years ago, someone swiped a giant flounder fish prop that was never recovered, Sapozhnikova said.

But she is holding out hope that the dinosaurs aren’t extinct.

“If everyone was to spread the word I’m hopeful they’d get found,” she said.

If you have any information about the costumes’ whereabouts e-mail info@ house ofyes.org .