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Ursus spelaeus : ウィキペディア英語版
Cave bear


The cave bear (''Ursus spelaeus'') was a species of bear that lived in Europe during the Pleistocene and became extinct about 24,000 years ago during the Last Glacial Maximum.
Both the name "cave" and the scientific name ''spelaeus'' are because fossils of this species were mostly found in caves, showing that cave bears may have spent more time in caves than the brown bear, which uses caves only for hibernation. Consequently, in the course of time, whole layers of bones, almost entire skeletons, were found in many caves.
==Taxonomy==
Cave bear skeletons were first described in 1774 by Johann Friederich Esper in his book ''Newly Discovered Zoolites of Unknown Four Footed Animals''.
While scientists at the time considered that the skeletons could belong to apes, canids, felids, or even dragons or unicorns, Esper postulated that they actually belonged to polar bears. Twenty years later, Johann Christian Rosenmüller, an anatomist at the Leipzig University, gave the species its binomial name. The bones were so numerous, most researchers held little respect for them. During World War I, a large number of cave bear bones were used as a source of phosphates, leaving behind little more than skulls and leg bones.〔
Many caves in Central Europe have skeletons of cave bears inside, for example the ''Heinrichshöhle'' in Hemer, the ''Dechenhöhle'' in Iserlohn, Germany. Complete skeleton, 5 complete skulls and 18 others was found inside Jaskinia Niedźwiedzia (en.''Bear cave'') in 1966 located in Poland.〔Praca Zbiorowa, "Jaskinia Niedźwiedzia w Kletnie. Badanie i udostępnianie", Polska Akademia Nauk, Ossolineum, Wrocław 1989, ISBN 8304030373. with summary.〕 In Romania, in a cave called Bears' Cave, 140 cave bear skeletons were discovered in 1983.〔(Cave Bears ). Jan Kowalski. psu.edu〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Cave bear」の詳細全文を読む



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