科学家发现最大飞鸟翼展媲美歼10战斗机_BEC初级作文

科学家发现最大飞鸟翼展媲美歼10战斗机

研究报告的作者是担任美国康乃迪克州格林威治布鲁斯博物馆馆长的古生物学家丹尼尔·克塞普卡。他告诉Live Science，“它的大小确实超过了我们的猜想。能够在鸟类进化树中添上这样的鸟类真令人兴奋。”

Until now, the biggest known flying bird was the extinct Argentavis magnificens, a condor like titan from Argentina.

在发现桑氏伪齿鸟之前，地球上曾经存在的最大鸟类是已灭绝的阿根廷巨鹰。它是一种来自阿根廷的和秃鹰很像的巨鸟。

"It's disputed how large Argentavis' wingspan was — we only have one wing bone for it," Ksepka said. "We think the wingspan ofArgentavis' skeleton was a bit under 4 meters (13.1 feet), while the skeletal wingspan of P. sandersi was about 5.2 meters (17 feet). Now both of their wingspans would be longer once feathers are taken into account, but P. sandersi would still probably be larger than Argentavis."

克塞普卡表示，“对于阿根廷巨鹰的翼展究竟有多大，我们是有争议的，因为我们只找到了它的一根翼骨。我们认为，阿根廷巨鹰骨骼的翼展差不多有4米（13.1英尺），而桑氏伪齿鸟骨骼的翼展大约为5.2米（17英尺）。如果将羽毛算上，它们的翼展将更长，但桑氏伪齿鸟大概还是会比阿根廷巨鹰略胜一筹。”

The fossil was first unearthed in 1983 near Charleston, South Carolina, when construction workers began excavations for a new terminal at the Charleston International Airport. It was named Pelagornis sandersi in honor of retired Charleston Museum curator Albert Sanders, who led the fossil's excavation.