科学家在巴西东北部一处施工现场发现了新的恐龙物种，命名为Dasosaurus tocantinensis1。这具化石出土于马拉尼昂州达维诺波利斯市一条道路铁路枢纽的建设工地，埋藏深度约8米1。该物种体长约20米，生活于约1.2亿年前的白垩纪早期向晚期的过渡时期1。
研究人员从化石中发现了尾椎骨、1.5米长的股骨、肋骨、足骨及上下肢骨骼1。通过对这些遗骨的分析，科学家发现Dasosaurus tocantinensis与西班牙地区发现的恐龙在进化上密切相关1，这一发现表明其祖先曾在1.4亿至1.2亿年前经由北非的陆地通道从欧洲迁移至南美洲1。这项研究成果已发表在《Journal of Systematic Palaeontology》2026年第24卷第1期上1，由Elver Luiz Mayer、Max Langer、Tito Aureliano、Aline Ghilardi等研究人员完成，并获得圣保罗州研究资助基金会的支持1。
Scientists have identified a previously unknown dinosaur species at a construction site in northeastern Brazil, designated Dasosaurus tocantinensis1. The specimen, measuring approximately 20 meters in length, lived during the Early Cretaceous period around 120 million years ago1. The fossil was unearthed roughly 8 meters beneath the surface at a road and rail hub project in Davinópolis, Maranhão State, near the eastern bank of the Tocantins River1.
The discovery carries significant implications for understanding prehistoric continental connections. The new species shares a close evolutionary relationship with dinosaurs found in Spain, suggesting that their common ancestor migrated from Europe to South America between 140 and 120 million years ago via a land corridor through North Africa1. Key fossil remains include tail vertebrae, a femur measuring 1.5 meters long, ribs, foot bones, and arm and leg bones1. The findings were published in the Journal of Systematic Palaeontology in 2026, Volume 24, Issue 1, and were supported by São Paulo State Research Foundation (FAPESP) funding1.
评论
还没有评论，欢迎留下第一条。