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A Tooth of Zeuglodon, One of the 'Yoke Teeth,' from which it derives the name

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A Tooth of Zeuglodon, One of the 'Yoke Teeth,' from which it derives the name.jpg Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern BirdThumbnailsKoch's Hydrarchus. Composed of Portions of the Skeletons of Several ZeuglodonsNature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern BirdThumbnailsKoch's Hydrarchus. Composed of Portions of the Skeletons of Several ZeuglodonsNature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern BirdThumbnailsKoch's Hydrarchus. Composed of Portions of the Skeletons of Several ZeuglodonsNature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern BirdThumbnailsKoch's Hydrarchus. Composed of Portions of the Skeletons of Several ZeuglodonsNature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern BirdThumbnailsKoch's Hydrarchus. Composed of Portions of the Skeletons of Several Zeuglodons

The best Zeuglodon, the first to show the vestigial hind legs and to make clear other portions of the structure, is in the United States National Museum