Mammoths
نویسندگان
چکیده
What are mammoths? The woolly mammoth — the symbol of the ice age — is the popular image of a mammoth: a large hairy elephant that lived in the arctic. However, there were also mammoths much smaller than modern elephants, mammoths without hair, and mammoths that lived in a Mediterranean or even African climate. All mammoths are members of the genus Mammuthus, closely related to the last two remaining elephant genera.
منابع مشابه
Isotopic paleoecology of Clovis mammoths from Arizona.
The causes of megafaunal extinctions in North America have been widely debated but remain poorly understood. Mammoths (Mammuthus spp.) in the American Southwest were hunted by Clovis people during a period of rapid climate change, just before the regional onset of Younger Dryas cooling and mammoth extirpation. Thus, these mammoths may provide key insights into late Pleistocene extinction proces...
متن کاملSolving the woolly mammoth conundrum: amino acid 15N-enrichment suggests a distinct forage or habitat
Understanding woolly mammoth ecology is key to understanding Pleistocene community dynamics and evaluating the roles of human hunting and climate change in late Quaternary megafaunal extinctions. Previous isotopic studies of mammoths' diet and physiology have been hampered by the 'mammoth conundrum': woolly mammoths have anomalously high collagen δ(15)N values, which are more similar to coeval ...
متن کاملEvolution: The Island of Misfit Mammoths
The genomes of two woolly mammoths have been sequenced. One of the last survivors had reduced genetic diversity. Although divergent in their mitochondrial genomes, the mammoths had similar nuclear genomes, a finding germane to elephant conservation.
متن کاملThe catastrophic extinction of North American mammoths and mastodonts
Archaeological and theoretical evidence reviewed here indicates that Clovis-era foragers exterminated mammoths and mastodonts in North America around 11,000 radiocarbon years ago. The process unfolded quickly as human foragers explored and dispersed into fragmenting habitats where megamammal populations were ecologically stressed. Megamammal extinctions were eco-catastrophes with major ripple e...
متن کاملExtraordinary incidence of cervical ribs indicates vulnerable condition in Late Pleistocene mammoths
The number of cervical vertebrae in mammals is highly conserved at seven. We have shown that changes of this number are selected against due to a coupling with major congenital abnormalities (pleiotropic effects). Here we show that the incidence of abnormal cervical vertebral numbers in Late Pleistocene mammoths from the North Sea is high (33.3%) and approximately 10 times higher than that of e...
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عنوان ژورنال:
- Current Biology
دوره 16 شماره
صفحات -
تاریخ انتشار 2006