白堊紀者(符:K),地質年代也。中生代之末,始於億四千五百五十萬年前,迄六千五百五十萬年前,凡八千萬年。因其地層富蜃灰(白堊),故名。
白堊紀者,居侏羅紀之後,而古近紀次之。
紀末,各地火山暴發(有云隕星墜地),大氣微粒突增,日光遂減,植物不復生,動物無食而衰矣,百昌近半幾絕,生靈塗炭,此謂白堊紀末滅絕也。
This article uses material from the Wikipedia 古文 / 文言文 article 白堊紀, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). 若無側注,諸文皆奉CC BY-SA 4.0以行。 Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki 古文 / 文言文 (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.