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American Red Fox
The American red fox (''Vulpes vulpes fulva'') is a North American subspecies of the red fox. It is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, occurring in North America. This subspecies is most likely the ancestor of the domesticated silver fox. North American colonization and native status Current literature discusses whether or not the red fox is native to North America, with some research suggesting that nearly all red fox populations in North America are not native. ''Vulpes vulpes '' is usually seen either as an exotic species introduced by Europeans during the colonization of the North American continent or as a hybrid between European and North American red foxes. While it is claimed that ''Vulpes vulpes fulva'' stems from a non-native population that spread westward from European introduction, a historical analysis of firsthand accounts does not support this claim. Phylogeographical and genetic analysis of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
