diprotodon

plural diprotodons

1. Any individual of the extinct marsupial genus Diprotodon, similar to a wombat in appearance but the size of a small elephant.

   No fewer than eighty diprotodons are represented by the bones already unearthed, […]

   1893, Edward Jewitt Wheeler, Isaac Kaufman Funk, William Seaver Woods, The Literary Digest, volume 7, page 638

   2 more examples

   It is rather hard to understand how animals so largo and heavy as the diprotodons and gigantic kangaroos could have existed there when the country was in the same state in which it is now,[…].

   1882, Royal Society of New South Wales, Journal and proceedings of the Royal Society of New South Wales, volume 15, page 51

   Soon we had a good view of the diprotodons, relatives of the present-day wombat but vastly larger.

   1993, Lyon Sprague De Camp, Rivers of Time, page 248