18+污漫画,亚洲国产港台日韩欧美三级电影网,办公室扒开奶罩揉吮奶明星,爱爱电影爱情影院网,斗破苍穹 小说免费阅读全集,人妻洗澡被强伦姧完整,打扑克牌又疼又叫视频软件,亚洲,日韩,aⅴ在线欧美,寂寞少妇扒开双腿猛烈进入免费看

 
Archaeological Discoveries
in 2001
Archaeological Discoveries
in 2000
Top Ten Archaeological Finds
for 1999
Archaeological Discoveries
in 1999
Homepage
 

The Earliest Fossil of Osteichthyes

????Chinese scientists have confirmed that the discovery of the fossil of an osteichthyes is so far the earliest of its kind, and marks a breakthrough in the study of the origin and evolution of early vertebrates.
???? Specialists point out that this discovery has offered a key to the origin of osteichthyes, thereby providing a new approach to understanding the evolution of vertebrates. Including the osteichthyes class of amphibious animals, reptiles, birds, mammals, and even human beings, vertebrates comprise about 50,000 existing species.
???? The paleichthyolite discovered in China is the earliest of the known osteichthyes. This species of osteichthyes may be our own ancestor.