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English(EN) A fossil lost for 20 years just rewrote the map of dinosaur ancestry

新化石Silescelida acristata重绘恐龙祖先图谱

古生物学家在巴西南里奥格兰德州发现了一个新的化石物种Silescelida acristata,其年代可追溯到约2.4亿年前的中三叠世。这种小型爬行动物在联合国教科文组织第四地质公园内的岩石中被发现,属于恐龙形类,包括现代鳄鱼和恐龙的祖先。该化石独特的股骨结构表明其具有半直立的姿势,意味着更高效的运动能力,这对恐龙形类后来的成功至关重要。这一发现还扩大了Euparkeriidae相关形态的已知地理分布范围,表明这些早期恐龙形类在全球的分布比之前理解的更广泛。 AI

排序理由 在科学期刊上发表的新化石物种发现。[lever_c_demoted from research: ic=1 ai=0.0]

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新化石Silescelida acristata重绘恐龙祖先图谱

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在科学期刊上发表的新化石物种发现。[lever_c_demoted from research: ic=1 ai=0.0]
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报道来源 [1]

  1. Fortune TIER_1 English(EN) · The Conversation ·

    失落20年的化石刚重绘了恐龙祖先图谱

    Researchers at Brazil's Federal University of Santa Maria confirmed a 240-million-year-old species, after rediscovering a missing fossil fragment.