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The platacanthomyine rodent Neocometes from the Miocene of South Korea and its paleobiogeographical implications

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Lee Y.-N., Jacobs L. L.

Acta Palaeontologica Polonica

2010

tom 55

nr 4

A left first lower molar of Neocometes from the Bukpyeong Formation, South Korea is more similar to Neocometes similis and Neocometes cf. similis from Europe than to Neocometes orientalis from Thailand, and is therefore referred to Neocometes aff.similis. The new discovery of Neocometesis important in that it is the first evidence in Asia to show close faunal affinity to European Neocometes. It is also of paleobiogeographic significance for the subfamily Platacanthomyinae, because it represents the easternmost occurrence of this subfamily in Eurasia, implying there was continuous gene flow between the Neocometes populations of eastern Asia and western Europe. The paleoclimatic interpretation for the Bukpyeong Formation based on the palynomorphs implies that Neocometes had wider climatic tolerances than either of the two extant platacanthomyine genera. The evolutionary stage of Korean Neocometesis comparable to material from European localities correlated with MN 4 and MN 5, which constrains the age of the Bukpyeong Formation to between 18 and 15.2 Mya.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Jacobs L. L.

1 Lee Y.-N.

1 2010

Wyniki wyszukiwania

The platacanthomyine rodent Neocometes from the Miocene of South Korea and its paleobiogeographical implications