Arthropleura armata was the worst nightmare of any homeowner: an 8 anda half foot long bug. Similar in appearance to the modern centipede,itwas one of the first invertebrates on land,and as such,most likely hadlittle to no predators. Thankfully,they lived well over 300 millionyears ago,and won't show up in your hallway any time soon。

　　史前蜈蚣(暂译)是史前的多足纲动物，即现今蜈蚣及千足虫的远古亲属。它们长0.3-2.6米，绝对是你的噩梦。它生存于3亿4000万至2亿8000万年前的石炭纪晚期，分布在北美洲及苏格兰。它们已知陆地上最大型的无脊椎动物，相信只有少数的天敌。

　　Even the smallest creatures deserve mention,and the horned gopher (Ceratogaulus Rhinoceros) is no exception. As the smallest mammal toever have horns,they should have at least a little recognition. It was originally thought the horns were meant for digging,but the consensusnow seems to be that they were used for defense。

　　这应该是田鼠的祖宗，头部的角可能是挖掘工具，也可能是一种防御武器。体型较小。

　　Jaekelopterus Rhenaniae is similar to Arthropleuria,only it lived inthe ocean. At over 8 feet in length,this "sea scropion" (only inappearance) makes the largest lobsters seem like toys. It crawled alongthe ocean floors nearly 390 million years ago。

　　史前巨蝎(暂译)体长2.5米，生活在距今3.9亿年前的。是一种水陆两栖的动物，引人注目的大钳子是他的主要作战工具。

　　Mamenchisaurus looks much like another famous dinosuar, Apatosaurus(formerly known as Brontosaurus)， and is similar except for one odddifference: neck length. Their necks were up to 46 feet in length andmade up 50% of their full body length. They lived nearly 150 millionyears ago and were entirely herbivorous。

　　马门溪龙为蜥臀目蜥脚下目恐龙的一属，属于马门溪龙科。牠们生活在侏罗纪晚期提通阶，约1亿5000万年前到1亿4000万年前，广泛分布在东亚地区。马门溪龙的体长可达22到26公尺，而脖子占一半长度，马门溪龙是曾经生活在地球上的脖子最长的动物。