The American Museum of Natural History opened its doors Saturday for New Yorkers to bring in their own natural history collections.
The museum hosted its annual "Identification Day," where people could bring in their shells, rocks, artifacts and more, and have a scientist take a look.
Museum officials said there were 17 experts from a number of departments on hand to identify whatever the public had to offer.
"They could be artifacts from Africa, from South America. Pottery, ceramics, lythics, textiles. They could be skeletons, bones, feathers, sea shells. Many, many objects," said Anibal Rodriguez of the museum's anthropology department.
"My son had a fossil that was 300 million years old," said one person at "Identification Day." "When he heard that, his face lit up."
In previous years, people have brought in a 100-million-year-old fish fossil and a 3,000-year-old hand axe from a Staten Island backyard.