Decades ago, fossilized teeth were discovered in Cuba dating to about 18 million years ago. They were small but tapered, sharp and serrated. They were the teeth of an apex predator. Researchers didn’t believe there was such an animal in the Caribbean, until they found another tooth in Puerto Rico, this time 29 million years old, according to an April 30 news release from the Florida Museum of Natural History. Still, the teeth alone weren’t enough to identify the prehistoric species. Then, along a road in the Dominican Republic in 2023, paleontologists unearthed not only another tooth, but vertebrae to match, the museum said. They had an identity. It was a crocodile-like reptile “built like a greyhound” and sometimes reaching 20 feet long — a sebecid.