But unlike most of its vegetarian kin, Tiarajudens also sported sturdy saber-like teeth that measured at least 12 centimeters long (part of the species' name translates as "unusual tooth").
A few years later, others reviewing the scientists' field notes learned of the unusual ichthyosaur teeth with two cutting edges.
They have an unusual combination of teeth, with large fanglike canines at the front of their jaws and worn, molar-like grinding teeth at the back.
This unusual combination of teeth led to some speculation about what they ate.
The Paratheria hypothesis enjoyed a brief renaissance when unusual, high-crowned teeth began turning up in the Cretaceous and Paleocene fossil record of Argentina.
However, it is unusual to classify tooth loss in order to produce information on both the number and position of those teeth in the same measure.
Humanity owes its dominant position on Earth not to any special strength of our muscles, nor any unusual sharpness of our teeth, but to the unique ingenuity of our brains.
It was a rather unusual election, with no legal teeth and no apparent precedent, and it involved doctors and lawyers, rug dealers and kebab cart operators.
Paleocene mammals included Cretaceous species such as opossum-like marsupials and, especially, the archaic and unusual multituberculates herbivorous animals that had teeth very similar in some respects to those of the later, more advanced rodents.
