Among sirenians, due to its giant size and probable similar lifestyle, it could recall Steller's sea cow, discovered in 1741 and exterminated by humans a few years later," Bianucci said.

The sirenians and baleen Whales. -- v. 4. River dolphins and the larger toothed whales.-- v. 5. The first book of dolphins.-- v. 6. The second book of dolphins and the porpoises Date 1981 1981-Call ...