搜索结果: 106-120 共查到“国际动态 古生物学”相关记录457条 . 查询时间(1.466 秒)
More than 550 million years ago, the oceans were teeming with flat, soft-bodied creatures that fed on microbes and algae and could grow as big as bathmats. Today, researchers at the University of Cali...
Fossil ‘Winged Serpent’ Is a New Species of Ancient Snake,Penn Doctoral Student Finds（图）
Winged Serpent New Species of Ancient Snake Penn Doctoral Student
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2017/7/20
An ancient sink hole in eastern Tennessee holds the clues to an important transitional time in the evolutionary history of snakes. Among the fossilized creatures found there, according to a new paper ...
Oldest buckthorn fossilized flowers found in Argentina
Oldest buckthorn fossilized flowers Argentina
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2017/7/20
Around 66 million years ago, at the end of the Cretaceous period, a giant asteroid crashed into the present-day Gulf of Mexico, leading to the extinction of the non-avian dinosaurs. How plants were af...
Scientists discover fossil of dinosaur ancestor with surprising croc-like appearance
Scientists fossil dinosaur ancestor croc-like appearance
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2017/4/27
Scientists have long wondered what the earliest dinosaur relatives looked like. Most assumed they would resemble miniature dinosaurs, about the size of chickens, and walk on two legs.The discovery of ...
Virginia Tech scientists discover early dinosaur cousin had a surprising croc-like look
Virginia Tech scientists early dinosaur cousin croc-like look
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2017/4/27
For decades, scientists have wondered what the earliest dinosaur relatives looked like. Most assumed that they would look like miniature dinosaurs, be about the size of a chicken, and walk on two legs...
Rock exposed in World War I trenches offers new fossil find
Rock exposed World War I trenches new fossil
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2017/4/27
An unusual fossil find is giving scientists new ideas about how some of the earliest animals on Earth came to dominate the world’s oceans.An international research team found 425-million-year-old foss...
Vision,not limbs,led fish onto land 385 million years ago
Vision not limbs led fish onto land 385 million years ago
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2017/3/30
EVANSTON - A provocative new Northwestern University and Claremont McKenna, Scripps and Pitzer colleges study suggests it was the power of the eyes and not the limbs that first led our ancient aquatic...
Paleontologists find fossil relative of Ginkgo biloba
Paleontologists fossil relative Ginkgo biloba
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2017/3/14
A discovery of well-preserved fossil plants by paleontologists from the United States, China, Japan, Russia and Mongolia has allowed researchers to identify a distant relative of the living plant ...
Evidence disproving tropical ‘thermostat’ theory:global warming can breach limits for life
disproving tropical thermostat theory global warming breach limits for life
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2017/3/14
New research findings show that as the world warmed millions of years ago, conditions in the tropics may have made it so hot some organisms couldn’t survive.Longstanding theories dating to the 1980s s...
多学科整合方法揭示鸟类重要特征演化（图）
多学科整合方法 鸟类 特征演化
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2017/2/13
2017年2月6日, 国家基因库生物多样性基因组学团队、日本东北大学、东京大学等单位的科学家们共同揭开鸟类特有性状的形成及宏观演化之谜——特异性保守序列对鸟类特有性状的宏观演化起到重要作用。此项关于鸟类基因组特异性保守序列 （avian-specific highly conserved elements, ASHCEs） 的研究成果在Nature Communications上发表。古脊椎所徐星...
我国科学家发现5.35亿年前毫米级微型人类远祖至亲（图）
毫米级人类 微型动物化石
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2017/2/14
英国《自然》（Nature）杂志当地时间2017年1月30日以封面亮点文章的形式，网上发表了西北大学早期生命研究团队韩健、舒德干和剑桥大学、中国地质大学（北京）等单位关于早期生命研究的又一重要成果——《陕西寒武纪最早期的微型后口动物》。该成果发现了5.35亿年前最古老的原始后口动物——冠状皱囊动物。这种奇特的毫米级微型动物很可能就是学术界期盼已久的后口动物亚界的一个根，因而代表着显生宙最早期的毫米...
Prized fossil find illuminates the lives of lizards in the Age of Dinosaurs
illuminates the lives lizards Age of Dinosaurs
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2017/2/16
Paleontologists picking through a bounty of fossils from Montana have discovered something unexpected — a new species of lizard from the late dinosaur era, whose closest relatives roamed in faraw...
Sequence data of biomolecules such as DNA and proteins, which provide critical information for evolutionary studies, have been assumed to be forever outside the reach of dinosaur paleontology. Protein...
最新研究表明植物化石燃料促使地球寒武纪生命大爆发（图）
植物 石燃料 地球寒武纪生命
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2017/1/17
最新一项研究表明，植物化石燃料阻止更多碳与大气层中的氧气结合形成二氧化碳，导致大气层中氧气指数升高，促使5.41亿年前寒武纪生命大爆发。图中是黑色页岩形成于4.5亿的前，包含着三叶虫和有机物质化石，该化石表明当时地球大气氧气含量升高。
