Inside Volcanic Clouds: Where Tephra Goes and Why It Matters
监视和预测火山云的移动是减轻对社区,基础设施和空中交通的影响的关键。
This Pterosaur Lived Over 200 Million Years Ago in Arizona and Was the Size of a Sea Gull
更多地了解Eotephradactylus McIntireae,这是北美最古老的晚期三叠纪翼龙,大约是海鸥的大小。
eotephradactylus mcintireae kligman,Whatley,Ramezani1,Marsh,Lyson,Fitch,Parker&Behrensmeyer,2025 doi:doi.org/10.1073/pnas.2505513122 Artwork:Brian Engh。显着性:PFV 393是第一个放射性化日期(209.187±0.083 mA旧)高多样性大陆大陆脊椎动物化石组合,填充了末端三叠纪灭绝之前的12 ma化石差距。 The taphonomy and depositional setting of this assemblage show that
亚利桑那州的三叠纪化石缓存揭示了Eotephradactylus McIntireae或“ Ash-Winged Dawn Goddess”,这是北美有史以来最古老的翼龙。