The noise of the battle awoke the machairodus negasus, the horplophorus ornatus, and the pareiasaurus serridens.— ScienceBlogs Channel : Life Science
In a similar way the _extinct_ machairodus, or sabre-toothed tiger, is characterized by a more highly differentiated and specially carnivorous dentition than is shown by any predacious beast of the _present day_.— On the Genesis of Species
In the machairodus there is no upper true molar at all, while the premolars are reduced to two, there being only these two teeth above, on each side, behind the canine.— On the Genesis of Species

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