Sumo wrestlers compete during the “Honozumo” ceremonial sumo tournament at the Yasukuni Shrine in Tokyo April 3, 2015. (Photo by Thomas Peter/Reuters)

A British Airways passenger plane flies in front of the moon above London, Britain, May 3, 2018. (Photo by Toby Melville/Reuters)

A dog has its portrait taken at a pet show in Hong Kong on February 3, 2023. (Photo by Isaac Lawrence/AFP Photo)

Workers repair a damaged road, in the aftermath of an earthquake, near Anamizu, Japan on January 3, 202. (Photo by Kim Kyung-Hoon/Reuters)

A pedestrian holds an umbrella to protect from the sun in Bangkok, Thailand, Friday, May 3, 2024. (Photo by Sakchai Lalit/AP Photo)

Visitors outside the venue for Seoul fashion week in Seoul, South Korea on September 3, 2024. (Photo by Lee Jin-man/AP Photo)

People inspect a dead whale on the coast of Baracoa, Artemisa province, Cuba, Thursday, October 3, 2024. (Photo by Ramon Espinosa/AP Photo)

Titanoboa, meaning "titanic boa," is an extinct genus of snake that lived approximately 60–58 million years ago, during the Paleocene epoch, a 10-million-year period immediately following the dinosaur extinction event. The only known species is Titanoboa cerrejonensis, the largest, longest, and heaviest snake ever discovered, which supplanted the previous record holder, Gigantophis.

A full-scale model of the snake was unveiled at New York City's Grand Central station before the exhibit opens at the Smithsonian in Washington DC.