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| | Baleen Whales: Scientific Classification |
 | | This large order is further divided into three suborders: the toothed whales or Odontoceti (killer whales, dolphins, porpoises, beluga whales, and sperm whales), the baleen whales or Mysticeti (blue whales, humpback whales, gray whales and right whales), and the Archaeoceti (which are all now extinct). |
 | | Right whales have no dorsal fin, no throat grooves, and extremely long baleen plates contained in a hugely arched jaw. |
 | | The relationship between early whales and modern whales is unclear due to a poor fossil record. |
| www.seaworld.org /infobooks/baleen/sciclassbw.html (441 words) |
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