An international team of paleobiologists have found that the sinuses of ocean-dwelling relatives of modern-day crocodiles prevented them from evolving into deep divers like whales and dolphins. An international team of paleobiologists have found that the sinuses of ocean-dwelling relatives of modern-day crocodiles prevented them from evolving into deep divers like whales and dolphins. Evolution Paleontology & Fossils Phys.org – latest science and technology news stories