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孑遗
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孑遗
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孑遗
曾经分布广泛或比较广泛,且数量和种类均很多,但随着时间推移逐渐衰退,或在重大事件特别是灭绝事件打击之后遭受重创,只有少数个体和种类孤独地生存于个别地区,并有日趋灭绝之势的生物。生物宏演化进程中的分类单元型式。
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characteristics of chemical industry accidents
characteristics of Chinese urban ethnic culture
characteristics of cleanroom
Characteristics of direction
characteristics of forestry economy
characteristics of hydrodynamics
characteristics of low-light level night vision imaging device
characteristics of mineral resources
characteristics of plant community
Characteristics of service operation management
characteristics of shale gas
characteristics of support system for aircraft materiel
characteristics of textile design
characteristics of tight oil
characteristics of vocational teaching
characteristic solution
characteristic space
characteristic species
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