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 (măs′tə-dŏn′) also mas·to·dont (-dŏnt′)
Any of several very large, extinct proboscidian mammals of the family Mammutidae of the Miocene, Pliocene, and Pleistocene Epochs, resembling elephants but having molar teeth of a different structure.

[New Latin Mastodōn, genus name : Greek mastos, breast, nipple + Greek odōn, tooth (from the nipple-shaped protrusions on the crowns of its molars); see dent- in Indo-European roots.]

mas′to·don′ic adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mastodont - extinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene timesmastodont - extinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene times; differ from mammoths in the form of the molar teeth
proboscidean, proboscidian - massive herbivorous mammals having tusks and a long trunk
genus Mammut, genus Mastodon, Mammut - extinct type genus of the Mammutidae: mastodons
American mastodon, American mastodont, Mammut americanum - mastodon of North America; in some classifications considered a mammoth rather than a mastodon
References in periodicals archive ?
He also wrote about Ice Age mastodont and giant beaver fossils found near Highgate, in southwestern Ontario, in 1891.
Saunders, "Environmental Insularity and the Extinction of the American Mastodont, in Quaternary Extinctions: A Prehistoric Revolution, ed.
Discovery of the jaw of an American mastodont (Mammut americanum) and an unusual sedimentary profile in a cornfield in Warren County, Indiana, prompted a multidisciplinary study of the palaeoenvironment of the site.
This line is based on the lack of mastodont, mammoth, and other Pleistocene vertebrate remains as well as Paleo-Indian artifacts north of the line.
Late-glacial pollen and macrofossils associated with the Rappuhn Mastodont (Lapeer County, Michigan).
The past sixty-odd years of proboscidean study in Michigan have been especially important, because during this interval efforts have shifted from the collection, recording, and exhibition of large mastodont and mammoth remains to an attempt to answer many biological questions about them.
Chronology: The oldest dated record is 12,590 [+ or -] 60 ybp (Aker Mastodont Locality).
The Cohoes Mastodont, the reconstructed skeleton of an 11,000-year-old elephant-like mammal, once was the centerpiece of the "old" New York State Museum in Albany.
Upon initial discovery by construction workers of a partial mastodont (Mammut?) skeleton, Hazel A.
In the paper to follow he riot only reported mastodont remains from 36 Michigan counties but commented on mastodont remains discovered in the state before his time (Winchell 1861; Lane 1902,1906; Dice 1920; Hay 1923).
The giant beaver is thought to have co-existed alongside the American mastodont, Mammut americanum (Moore 1890; Powell 1948; Graham et al.