四足动物

Hoxa-11gene plays an important role in the development of fish fins and tetrapod limbs.

Hoxa-11基因在鱼类鳍和四足动物肢发育过程中起着重要作用。

But the nickel disappearance is one more clue about how the planet went from suffocating to a place where a terrestrial tetrapod could take a deep breath.

但是对于如何解释我们的地球从一个令人窒息的环境转变为一个让陆地四足动物可以自由呼吸的地方，镍的消失又提供了一个线索。

Shore, they encountered chal lenges that no vertebrate had ever faced be

当四足动物冒险上陆地，他们遭遇到挑战是要面对无脊椎这样的状况---这

The ancestor of all tetrapods four - limbed animals was probably a lobe -finned fish that was similar to coelacanths living today off the Comoro Island's coast .

在非洲科摩罗岛附近的海域，至今仍然生活着一种矛尾鱼，它与被认为是所有四足动物祖先的骨鳞鱼非常相似。

Sixteen ( 15 new) amphibian and twenty-two ( 11 new) squamate species have been reported across China, including the oldest Chinese tetrapod Sinostega pani from the Late Devonian of Ningxia Hui Autonomous Region, the large stereospondyl amphibian Yuanansuchus laticeps from the Middle Triassic of Hubei Province, Late Jurassic/Early Cretaceous lissamphibians ( e. G., the anurans Callobatrachus sanyanensis and Mesophryne beipiaoensis, the caudates Jeholotriton paradoxus and Laccotriton subsolanus) from Northeast China, Paleogene lizards (e. G., Brevidensilacerta xichuanensis and Tinosaurus yuanquensis) from North China, and numerous lizards from the Late Cretaceous of Nei Mongol Autonomous Region.

共报道了16种两栖类和22种有鳞类，其中15种两栖类和11种有鳞类为新种，包括我国最古老的四足动物宁夏晚泥盆世的潘氏中国螈，湖北中三叠世的大型全椎两栖类宽头远安鲵，东北晚侏罗世/早白垩世的多种滑体两栖类(如无尾类三燕丽蟾和北票中蟾，有尾类奇异热河螈和东方塘螈)，华北古近纪的蜥蜴类(如淅川短齿蜥和垣曲响蜥)，以及内蒙古晚白垩世的多种蜥蜴类等。

At the approach of spring the red squirrels got under my house,two at a time, directly under my feet as I sat reading or writing,and kept up the queerest chuckling and chirruping and vocal pirouetting and gurgling sounds that ever were heard; and when I stamped they only chirruped the louder, as if past all fear and respect in their mad pranks, defying humanity to stop them.

不多久，不仅在这些湖岸上，在每一个小山，平原和每一个洞窟中，都有霜从地里出来了，像一个四足动物从冬眠中醒了过来一样，在音乐声中寻找着海洋，或者要迁移到云中另外的地方。

After two seasons, this rude dwelling does not deform the scene. Already the birds resort to it, to build their nests, and you may track to its door the feet of many quadrupeds.

两个季节过去了，但这间简陋的茅舍并没有破坏景色；鸟儿都筑起了巢穴，门前还可以看到其它四足动物路过的痕迹。

Quadrupeds are confined to their coverts and the birds sit upon their perches this peaceful hour.

在这静謐的时刻，四足动物躲在温暖的窝中，而鸟儿则藏身于枝头。

Quadrupeds are confined to their coverts and the birds sit upon their perches this peaceful hour.

万籁俱静，四足动物都找地方隐藏起来了，鸟儿也栖息不动。

Quadrupeds are confined to their coverts and the birds sit upon their perches this peaceful hour.

万籁俱静，四足动物都找地方隐藏起来了，鸟儿也只好栖息不动。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新