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The crowns of three "grinders" or molars of elephants compared. a is that of an extinct mastodon with four transverse ridges; b is that of the African elephant with nine ridges in use and ground flat; c is that of the mammoth with sixteen narrow ridges in use—the rest, some eight in number, are at the left hand of the figure and not yet in use.

Author

The Project Gutenberg eBook, More Science From an Easy Chair, by Sir E. Ray (Edwin Ray) Lankester Published in 1913

Posted on

Saturday 25 April 2020

Dimensions

750*912

Keywords

Elephant, Prehistoric

Albums

• Prehistoric

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