Which is the Largest Mammal in history?

Largest mammal in history - Indricotherium (extinct)
- a type of African elephant,
- lived 34 and 23 million years ago,
- 3 to 4 times weight of current adult African elephants.

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Largest living mammal - Blue whale
Largest living land mammal - African Bush Elephant

Dinosaurs are reptiles, not mammals.

reference:
American Museum of Natural History
http://www.amnh.org/exhibitions/extrememammals/extreme-mammals/indricotherium.php

http://www.greenexpander.com/2007/10/22/biggest-animals-on-earth/

* this is taken from my YA.
http://answers.yahoo.com/question/index;_ylt=Am8d4d5DGd7f9DDLUM0Tg4Lty6IX;_ylv=3?qid=20090814113931AAmaFQ4&show=7#profile-info-ZF8KwBIhaa