恐龙英语科普

The DinosauriaDinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living. The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles," specifically Megalosaurus, Iguanodon, and Hylaeosaurus, the only three dinosaurs known at the time. The creatures that we normally think of as dinosaurs lived during the Mesozoic Era, from late in the Triassic period (about 225 million years ago) until the end of the Cretaceous (about 65 million years ago). But we now know that they actually live on today as the birds.

恐龙 dinosaur ['dainəsɔ:] n.1. 【古生物】恐龙[晰龙类(saurischia)和鸟龙类(Ornithischia)爬行动物的总称](已绝种的)大爬行动物[参较plesiosaur]2. [贬义](顽固、老旧、保守的)大人物；(过时的)恐龙式庞然大物；巨大障碍[亦作dinosaurian]3. [用复数]“恐龙”企业，沿袭旧规、经营方式过时、可能破产或“灭绝”的公司(或组织)4. 年老体衰的摇滚乐音乐家adj.(如恐龙般)古时存在而现已绝迹的

TheDinosauriaDinosaurs,oneofthemostsuccessfulgroupsofanimals(intermsoflongevity)thathaveeverlived,evolvedintomanydiversesizesandshapes,withmanyequallydiversemodesofliving.Theterm"Dinosauria"wasinventedbySirRichardOwenin1842todescribethese"fearfullygreatreptiles,"specificallyMegalosaurus,Iguanodon,andHylaeosaurus,theonlythreedinosaursknownatthetime.ThecreaturesthatwenormallythinkofasdinosaurslivedduringtheMesozoicEra,fromlateintheTriassicperiod(about225millionyearsago)untiltheendoftheCretaceous(about65millionyearsago).Butwenowknowthattheyactuallyliveontodayasthebirds.RunningDeinonychus.©1995B.CunninghamSomethingstokeepinmindaboutdinosaurs:•Noteverythingbiganddeadisadinosaur.Alltoooften,bookswritten(ormoviesmade)forapopularaudienceincludeanimalssuchasmammoths,mastodons,pterosaurs,plesiosaurs,ichthyosaurs,andthesail-backedDimetrodon.Dinosaursareaspecificsubgroupofthearchosaurs,agroupthatalsoincludescrocodiles,pterosaurs,andbirds.althoughpterosaursarecloserelations,theyarenottruedinosaurs.Evenmoredistantlyrelatedtodinosaursarethemarinereptiles,whichincludetheplesiosaursandichthyosaurs.MammothsandmastodonsaremammalsanddidnotappearuntilmanymillionsofyearsafterthecloseoftheCretaceousperiod.Dimetrodonisneitherareptilenoramammal,butabasalsynapsid,i.e.,anearlyrelativeoftheancestorsofmammals.•Notalldinosaurslivedatthesametime.Differentdinosaurslivedatdifferenttimes.DespitetheportrayalsinmovieslikeKingKongandJurassicPark,noStegosauruseversawaTyrannosaurus,becauseTyrannosaurusdidn'tappearonthesceneuntil80orsomillionyearsfollowingtheextinctionofstegosaurs.ThesamegoesforApatosaurus("Brontosaurus")—it'sboneswerealreadywell-fossilizedbythetimeT.rexcamealong.•Dinosaursarenotextinct.Technically.Basedonfeaturesoftheskeleton,mostpeoplestudyingdinosaursconsiderbirdstobedinosaurs.Thisshockingrealizationmakeseventhesmallesthummingbirdalegitimatedinosaur.Soratherthanreferto"dinosaurs"andbirdsasdiscrete,separategroups,itisbesttorefertothetraditional,extinctanimalsas"non-aviandinosaurs"andbirdsas,well,birds,or"aviandinosaurs."Itisincorrecttosaythatdinosaursareextinct,becausetheyhaveleftlivingdescendantsintheformofcockatoos,cassowaries,andtheirpals—justlikemodernvertebratesarestillvertebrateseventhoughtheirCambrianancestorsarelongextinct.

恐龙是生活在距今大约2亿3500万年至6500万年前的、能以后肢支撑身体直立行走的的一类动物，支配全球陆地生态系统超过1亿6千万年之久。大部分恐龙已经灭绝，但是恐龙的后代——鸟类存活下来，并繁衍至今。恐龙”一词在字典中意思：一类生活在几亿年以前的古动物，现已灭绝.Dinosaurs lived about 200 million in 3500 million years ago to 6500 million years ago, can support the body upright limb of a class of animals, the control of global terrestrial ecosystems over 100 million 6 million years. Most dinosaurs have become extinct, but the descendants of dinosaurs - birds, survive and reproduce so far. Dinosaur "in the dictionary has two meanings: one living in hundreds of millions of years ago the ancient animal, now extinct.

恐龙简介恐龙是出现于二亿四千五百万年前，并繁荣于六千五百万年前结束的中生代爬行动物。或为恐龙和与它同一时代的蛇颈龙、翼龙等的模糊总称。恐龙在在6500万年前白垩纪结束的时候突然全部消失，成为地球生物进化史上的一个谜，这个谜至今仍无人能解。地球过去的生物，均被记录在化石之中。中生代的地层中，即曾发现许多恐龙的化石。其中可以见到大量或呈现各式各样形状的骨骼。但是，在紧接着的新生代地层中，却完全看不到恐龙的化石。由此推知恐龙在中生代时一起灭绝了。恐龙种类多，体形和习性相差也大。其中个子大的，可以有几十头大象加起来那么大；小的，却跟一只鸡差不多。就食性来说，有温顺的 草食者和凶暴的肉食者，还有荤素都吃的杂食性恐龙。Dinosaur ProfileDinosaurs appeared in two hundred forty-five million years ago, and prosperity at the end of the Mesozoic reptiles 65 million years ago. , Or dinosaurs, and with it the same era plesiosaurs, pterosaurs and other fuzzy generic term. Dinosaurs in the Cretaceous period ended 65 million years ago when all of a sudden disappeared, a mystery of the evolutionary history of life on Earth, is still without a person who can answer this mystery. Creatures of the Earth in the past, are being recorded in the fossil. Mesozoic strata, that many dinosaur fossils have been found. Where you can see the bones of large or presents a wide range of shapes. However, in the following Cenozoic strata, but completely see less than the fossils of dinosaurs. We concluded that with the extinction of the dinosaurs in the Mesozoic.Many kinds of dinosaurs, body shape and habits also big difference. Large sub then dozens of elephants together; small, but with almost a chicken. Docile herbivorous, feeding habits,The meat eaters and violent, as well as meat and vegetables to eat omnivorous dinosaur.

There were a lot of kinds of dinosaurs. Like saurischia,Ornithischia and plesiosaur. Some dinosaurs are small, and some are big. Some eat meat and some eat leaves. 选我吧，求你了，都是我一个字一个字打出来的

The word "dinosaur" comes from the ancient Greek words "deinos" ("terrible") and "sauros" ("lizard"). Strictly speaking, dinosaurs refer to land dwelling creatures that dominated life on earth during the Mesozoic Era (225 million to 65 million years ago). They lived alongside with marine reptiles (such as ichthyosaurs, mosasaurs, plesiosaurs) and flying reptiles. As a group, dinosaurs existed for over 150 million years, occupying every type of environment and climate on Earth. They ranged in size from those as small as a chicken to others over 100 feet long and weighing nearly 100 tons. Dinosaurs did not achieve their great size or domination overnight - they evolved alongside reptiles and mammals, but managed to outcompete them. Were it not for the great Cretaceous extinction 65 million years ago, the mammals would not have evolved as they did, nor would human beings as we know them exist恐龙简介恐龙是出现于二亿四千五百万年前，并繁荣于六千五百万年前结束的中生代爬行动物。或为恐龙和与它同一时代的蛇颈龙、翼龙等的模糊总称。恐龙在在6500万年前白垩纪结束的时候突然全部消失，成为地球生物进化史上的一个谜，这个谜至今仍无人能解。地球过去的生物，均被记录在化石之中。中生代的地层中，即曾发现许多恐龙的化石。其中可以见到大量或呈现各式各样形状的骨骼。但是，在紧接着的新生代地层中，却完全看不到恐龙的化石。由此推知恐龙在中生代时一起灭绝了。恐龙种类多，体形和习性相差也大。其中个子大的，可以有几十头大象加起来那么大；小的，却跟一只鸡差不多。就食性来说，有温顺的 草食者和凶暴的肉食者，还有荤素都吃的杂食性恐龙。中文资料恐龙是出现于中生代多样化优势陆栖脊椎动物。“恐龙”一词是生物学家对英文Dinosauria即“恐怖的蜥蜴”的翻译，并不是中国传统文化中的“龙”。恐龙曾支配全球陆地生态系统超过1亿6千万年之久。恐龙最早出现在2亿3千万年前的三叠纪晚期，在大灭绝中脱颖而出，灭亡于约6千5百万年前的白垩纪晚期所发生的白垩纪末灭绝事件。在1861年发现的始祖鸟化石，与美颌龙化石极度相似，差别在于始祖鸟化石有着羽毛痕迹[1] ，这显示鸟类可能是恐龙的后代。自从20世纪70年代以来，许多研究指出现代鸟类极可能是兽脚亚目K恐爪龙类恐龙的直系后代。大部分科学家视鸟类为唯一幸存发展至今的恐龙，而少数科学家甚至主张它们应该分类于同一纲之内。鳄鱼则是另一群恐龙的现代近亲，但两者关系较恐龙与鸟类远。恐龙、鸟类、鳄鱼都属于爬行动物的主龙类演化支，该演化支首次出现于二叠纪晚期，并在三叠纪中期成为优势水陆两栖动物群。恐龙（不包含鸟类）是群生存于陆地上的主龙类爬行动物，四肢直立于身体之下，而非往两旁撑开。[2] 许多史前爬行动物常被一般大众非正式地认定是恐龙，例如：翼手龙、鱼龙、蛇颈龙、沧龙、盘龙类（异齿龙与基龙）等，但从科学角度来看，这些都不是恐龙。有科学家最新研究认为，0.66亿年前小行星碰撞地球时，正值恐龙生态系统较脆弱时期，遭遇小行星碰撞所致的环境巨变，恐龙在生活了1.6亿年后走向灭绝。