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Wyszukujesz frazę "Geraads, D." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Late Miocene large mammals from Yulafli, Thrace Region, Turkey, and their biogeographic implications
Autorzy:
Geraads, D
Kaya, T.
Mayda, S.
Powiązania:
https://bibliotekanauki.pl/articles/23347.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Perissodactyla
Indarctos arctoides
Miocene
mammal
Late Miocene
Turkey
Yulafli
Vallesian
Hippopotamodon antiquus
Proboscidea
Artiodactyla
large mammal
biogeography
Thrace Region
paleontology
Opis:
Collecting over the last twenty years in sand and gravel quarries near Yulafli in European Turkey has yielded a substantial fauna of large mammals. The most significant of these for biochronology are well−preserved remains of the ursid Indarctos arctoides, the suid Hippopotamodon antiquus, and several rhino genera. They point to a late Vallesian (MN 10−equivalent) age. Several other taxa, of longer chronological range, are in good agreement with this dating. The Proboscidea include, besides the Eastern Mediterranean Choerolophodon, the Deinotherium + Tetralophodon association, commonly found in Europe, and the rare “Mastodon” grandincisivus, here reported for the first time in the Vallesian. The age of Yulafli shows that the large size of some taxa, such as Deinotherium (size close to that of D. gigantissimum) and Dorcatherium, does not always track chronology. The Yulafli fauna is close in composition and ecology to other localities in Turkish Thrace, and also shares several taxa unknown in Anatolia, especially Dorcatherium, with the North−Western European Province. It reflects a forested/humid landscape that extended in Vallesian times along the Aegean coast of Turkey, perhaps as far South as Crete, quite distinct from the open environments recorded at the same period in Greek Macedonia and Anatolia, and probably more like the central European one. Together with the establishment of a Tethys–Paratethys marine connection, this “Eastern Aegean Province” likely acted as an ecological barrier that hindered East−West migrations of open−country large mammals, such as bovids or long−limbed giraffes, and might have contributed to the differentiation of Ouranopithecus and Ankarapithecus.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The fossil record of camelids demonstrates a late divergence between Bactrian camel and dromedary
Autorzy:
Geraads, D.
Didier, G.
Barr, W.A.
Reed, D.
Laurin, M.
Powiązania:
https://bibliotekanauki.pl/articles/2082155.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Camelidae
phylogeny
divergence time
fossil record
birth-and-death models
Pleistocene
Africa
Opis:
A new compilation of the Old World fossil record of Camelidae and a recent phylogenetic analysis allow a new assessment of the timing of the clade’s diversification. Using a recent implementation of the fossilized birth-death process, we show that the divergence between Bactrian camel and dromedary has a peak probability density around 1 Ma and probably occurred less than 2 million years ago. These dates are much younger than molecular estimates, which place the divergence between the dromedary and the Bactrian camel between 4 and 8 million years ago. Calibration problems in molecular dating seem to explain much of this difference.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 2; 251-260
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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