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Alligator Munensis
''Alligator munensis'' is an extinct species of alligator from the Quaternary of Thailand. After the skull of ''A. munensis'' was discovered, it was tentatively assigned to the Chinese alligator before being recognized as a distinct species. Although the two are still considered to be close relatives, the pronounced anatomical differences suggest that the two species split from one another long prior to the Pleistocene, possibly during the uplifting of the Tibetan Plateau during the Miocene. It had a short and robust skull and may have had globular back teeth possibly corresponding to a greater amount of hard-shelled prey items. The nostrils of ''A. munensis'' were positioned much further towards the back of the skull than in other alligators, but the function of this is unknown. History and naming The only currently known skull of ''Alligator munensis'', specimen DMR-BSL2011-2, was discovered in 2005 in a layer of Quaternary alluvium in the village of Ban Si Liam, northeastern Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Pleistocene
The Chibanian, widely known by its previous designation of Middle Pleistocene, is an age in the international geologic timescale or a stage in chronostratigraphy, being a division of the Pleistocene Epoch within the ongoing Quaternary Period. The Chibanian name was officially ratified in January 2020. It is currently estimated to span the time between 0.770 Ma (770,000 years ago) and 0.126 Ma (126,000 years ago), also expressed as 770–126 ka. It includes the transition in palaeoanthropology from the Lower to the Middle Palaeolithic over 300 ka. The Chibanian is preceded by the Calabrian and succeeded by the proposed Tarantian. The beginning of the Chibanian is the Brunhes–Matuyama reversal, when the Earth's magnetic field last underwent reversal. It ends with the onset of the Eemian interglacial period (Marine Isotope Stage 5). The term Middle Pleistocene was in use as a provisional or "quasi-formal" designation by the International Union of Geological Sciences (IUGS). W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
