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.

(From front to back) Carson, Rosie and Charlie Surfs Up compete during the World Dog Surfing Championships in Pacifica, California, on August 5, 2023. The event helps local charities raise money by sponsoring a contestant or a team, with a portion of the proceeds going to dog, environmental, and surfing nonprofit organizations. (Photo by Josh Edelson/AFP Photo)

Daniel Sheridan, a council worker from Poole, Dorset, runs a side hustle snapping dogs living their best lives in the second decade of December 2024. (Photo by Daniel Sheridan/South West News Service)

Beach Policeman, Potomac River, 1922. (Photo by National Photo Company/Colorized by Patty Allison)

“Still” also known as the “Mirror Man”, created by artist Rob Mulholland which symbolises the physical and spiritual relationship between humans and the natural world, has returned to Loch Earn in St. Fillans on May 9, 2025 after being removed in 2017 due to storm damage. (Photo by Lesley Martin)

Students training to be flight attendants hold books on their heads, chopsticks in their mouths, and papers in between their knees, as they take part in a standing posture practice at a vocational school in Shijiazhuang, Hebei province, China May 4, 2017. (Photo by Reuters/Stringer)

A member of the Community Police of the FUSDEG (United Front for the Security and Development of the State of Guerrero) search for a man, who ran away upon seeing the Community Police approach as they patrolled a street, in the village of Petaquillas, on the outskirts of Chilpancingo, in the Mexican state of Guerrero, February 1, 2015. Approximately 500 members of the Community Police from the FUSDEG took control of the security of the village of Petaquillas on the night of January 30 at the request of the people tired of the actions of organized crime, local media reported. (Photo by Jorge Dan Lopez/Reuters)

Giant panda Yu Ai enjoys fruit “kebabs” at Chongqing Zoo on November 30, 2024 in Chongqing, China. (Photo by Li Hongbo/VCG via Getty Images)