...Moreover, inthe mastodons the roots of the teeth are longprongs, while in the elephants the roots aresmall and irregular... 
Frederic A. Lucas 「Animals of the Past」
...There is another hint of relationship in theupper tusks of the earlier mastodons, and thisis the presence of a band of enamel runningdown each tusk...
Frederic A. Lucas 「Animals of the Past」
...And with these facts in mind, aided by photographsof various skeletons of mastodons, Mr...
Frederic A. Lucas 「Animals of the Past」
...They certainlydo not represent the heads of mastodons, but we are not ready to saythat the peccary is the prototype of these carvings, although thesimilarity between the glyphs (, figs...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
...It was like a pictureof the earth when the mastodons, the grass-eaters and the meat-eatersdisputed for its supremacy...
Various 「Astounding Stories of Super-Science, May, 1930」
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