Whatcheeria was an early tetrapod, as the first land animals with backbones were known.

瓦切螈是一种早期的四足动物，作为第一批有脊椎的陆地动物而为人所知。

Things with backbones and skulls can support huge eyes, but jumping spiders are not huge.

有脊椎和头的东西可支撑巨大的眼睛，但跳蛛并不大。

Vertebrates are animals with backbones and bones inside their bodies. The bones help to support their bodies.

脊椎动物是身体里边有脊椎和头的动物。头来帮助支撑他们的身体。

By human standards, a few vertebrate species have incredible longevity.

照人类的标准，有一脊椎动物的寿命长得令人信。

The researchers say the acanthothoracid was one of the earliest jawed vertebrates with teeth ever to live.

研究人员表示，acanthothoracid是有史来最早的有牙齿的颚脊椎动物之一。

The land vertebrates – animals that have a backbone or spine – showed up some 375 million years ago.

大约3。75亿年前，陆地脊椎动物，也就是有脊或脊椎的动物，开始出现。

At a time when any animals with legs and backbones were still pretty new, temnospondyls did incredibly well for themselves.

在任何有腿和脊椎的动物还很新鲜的时候，temnospondyls 自己做得非常好。

All animals with backbones and four legs came from the same common ancestor, who lived about 400 million years ago.

所有有脊椎和四条腿的动物都来自大约 4 亿年前的同一个祖先。

They say the loss of animal life is worst in South and Central America. These regions saw an 89 per cent loss in the population of vertebrates in the past four decades.

他们表示美洲南部和中部地区动物死亡情况最为严重。在过去40年中，有89%的脊椎动物在区域消失了。

The team counted up the vertebrate animals (those with backbones) that scientists have caught eating poop. The tally totaled more than 150 poop-consuming species. Feces eaters ranged from adult black bears to baby koalas.

研究团队统计了科学家们发现的吃粪便的有脊椎动物（有脊柱的动物）。统计的总数超过150种食粪物种。食粪者从成年黑熊到考拉幼崽不等。

With an efficient new way to take in nearly limitless amounts of oxygen from air, animals were eventually able to get bigger and more diverse over the ages, and now all of us lung-having vertebrates share that common ancestor.

有了一种从空气中吸收几乎无限量氧气的有效新方法，随着时间的推移，动物最终能够变得更大、更多样化，现在我们所有有肺的脊椎动物都有一个共同的祖先。