حفرية حية: الفرق بين النسختين

 

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| caption1 = أحفورة عمرها 170- مليون سنة ''أوراق الجنكة ''

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These species have a fossil record indicating they have survived major [[extinction event]]s, generally retain low [[taxonomic]] diversities today, having no close living relatives. A species that successfully radiates (forming many new species after a possible [[genetic bottleneck]]) has become too successful to be considered a ''living fossil''.