A new species of dinosaur has been discovered that could be the gateway to a type of ...
A new species of dinosaur has been discovered by a group of Chinese paleontologists at Yunnan University. It is an ...
A new twist in an old origin story: Earliest dinosaurs may have emerged in the Amazon
The remains of the earliest dinosaurs may lie undiscovered in the Amazon and other equatorial regions of South America and Africa, suggests a new study led by UCL (University College London) ...
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淡水鱼系列小科普 | 亚洲美人鱼——胭脂鱼
在长江、钱塘江及闽江流域中，有一种成鱼身形为绛红色，就像在水中一抹明艳醒目的胭脂。它就是胭脂鱼Myxocyprinus asiaticus (Bleeker)，也被称为“亚洲美人鱼”，是我国特有的大型淡水鱼类。 胭脂鱼曾经广泛活跃在长江及闽江流域，但由于其胚胎发育期较长（一般雄鱼5龄以上、雌鱼7龄以上才能性成熟），成活率较低，在营养转化阶段中常常会死亡，再加上栖息地破坏等原因，以及过度捕捞，种群数 ...