| 1. | This mammal species is known only from this fragmentary tribosphenic teeth.
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| 2. | The tribosphenic design appears primitively in all groups of mammals.
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| 3. | The new mammal has " pseudo-tribosphenic " teeth.
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| 4. | From the primitive tribosphenic tooth, molars have diversified into several unique morphologies.
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| 5. | Metatherians belong to a subgroup of the northern tribosphenic mammal clade or Boreosphenida.
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| 6. | Another fragmentary tooth, UA 8699, is recognizable as a tribosphenic lower molar.
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| 7. | These mammals possessed tritubercular lower molars and these were not tribosphenic and were quite primitive.
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| 8. | The tribosphenic tooth is found in insectivores and young platypuses ( adults have no teeth ).
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| 9. | Early creodonts ( both oxyaenids and hyaenodontids ) displayed the tribosphenic molars common for basal therians.
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| 10. | It is believed to be 167 million years old, or 25 million years older than all previous tribosphenic fossils.
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