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  2. File:Orca anatomy.svg - Wikipedia

    en.wikipedia.org/wiki/File:Orca_anatomy.svg

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  3. File:Orca internal anatomy.svg - Wikipedia

    en.wikipedia.org/wiki/File:Orca_internal_anatomy.svg

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  4. Toothed whale - Wikipedia

    en.wikipedia.org/wiki/Toothed_whale

    Unlike human teeth, which are composed mostly of enamel on the portion of the tooth outside of the gum, whale teeth have cementum outside the gum. Only in larger whales, where the cementum is worn away on the tip of the tooth, does enamel show. [17] There is only a single set of functional teeth (monophyodont dentition). [19]

  5. New footage reveals key clues to understanding mysterious ...

    www.aol.com/elusive-orca-group-hunts-dolphins...

    The scientists also discovered signs of orca tooth rake marks on the dorsal fin of a fin whale (Balaenoptera physalus). While there are no observations of orcas hunting fin whales, orcas are known ...

  6. Orca - Wikipedia

    en.wikipedia.org/wiki/Orca

    The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it is found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.

  7. Images reveal how an orca pod hunts the world’s largest fish

    www.aol.com/news/images-reveal-orca-pod-hunts...

    An orca pod in the Pacific Ocean off the coast of Mexico has devised a cunning strategy to hunt and kill whale sharks — the world’s largest fish that can grow up to 18 meters (60 feet) in ...

  8. Orcinus paleorca - Wikipedia

    en.wikipedia.org/wiki/Orcinus_paleorca

    In comparison, the modern killer whale has teeth around 8 cm (3.1 in) in height and 2.5 cm (0.98 in) in diameter. [3] Like the modern killer whale, the tooth lacks a coat of cementum. However, unlike the modern killer whale, O. paleorca had a circular tooth root as opposed to an oval, and the pulp extended more towards the back than the front. [2]

  9. Baleen whale - Wikipedia

    en.wikipedia.org/wiki/Baleen_whale

    While, unlike a modern baleen whale, Janjucetus lacked baleen in its jaw, the anatomy shows sufficient similarity to baleen whales. It appears to have had very limited apparent biosonar capabilities. Its jaw contained teeth, with incisors and canines built for stabbing and molars and premolars built for tearing.