Dual origin of tribosphenic mammals

@article{Luo2001DualOO,
  title={Dual origin of tribosphenic mammals},
  author={Zhe‐Xi Luo and Richard. Cifelli and Zofia Kielan-Jaworowska},
  journal={Nature},
  year={2001},
  volume={409},
  pages={53-57}
}
Marsupials, placentals and their close therian relatives possess complex (tribosphenic) molars that are capable of versatile occlusal functions. This functional complex is widely thought to be a key to the early diversification and evolutionary success of extant therians and their close relatives (tribosphenidans). Long thought to have arisen on northern continents, tribosphenic mammals have recently been reported from southern landmasses. The great age and advanced morphology of these new… 
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240 Citations

The Gondwanan Origin of Tribosphenida (Mammalia)

Abstract A review of the Southern Hemisphere Mesozoic tribosphenic mammal fossil record supports the hypothesis that Tribosphenida arose in the Southern Hemisphere during the Early Jurassic, around…

The evolution of tribospheny and the antiquity of mammalian clades.

Marsupial and monotreme evolution and biogeography

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An Early Cretaceous Tribosphenic Mammal and Metatherian Evolution

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In quest for a phylogeny of Mesozoic mammals

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The earliest known eutherian mammal

The skeleton of a eutherian (placental) mammal found in northeastern China has limb and foot features that are known only from scansorial and arboreal extant mammals, in contrast to the terrestrial or cursorial features of other Cretaceous eutherians.

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This mammal has scansorial forelimb features, and provides the ancestral condition for dental and other anatomical features of eutherians, reducing and resolving a discrepancy between the previous fossil record and the molecular estimate for the placental–marsupial divergence.

NEW TRIBOSPHENIC MAMMALS FROM THE MUSSENTUCHIT LOCAL FAUNA ( CEDAR MOUNTAIN FORMATION , CENOMANIAN ) , UTAH , USA

Herein we describe two new tribosphenic mammals from the Cedar Mountain Formation of Emery County, Utah, USA. The fossils occur in a narrow stratigraphic interval near the top of the unit…
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