用英文表达关于恐龙 的知识-恐龙的英语-英语学习资料
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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...
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类似问题
类似问题1： 【关于恐龙的知识（有英文的吗）?】百度作业帮[英语科目]
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.
Dinosaurs are a diverse group of animals that were the dominant terrestrial vertebrates for over 160 million years,from the late Triassic period (about 230 million years ago) until the end of the Cretaceous (about 65 million years ago).The extinction of most dinosaur species occurred during the Cretaceous–Tertiary extinction event.The fossil record indicates that birds evolved within theropod dinosaurs during the Jurassic period.Some of them survived the Cretaceous–Tertiary extinction event,including the ancestors of all modern birds.Consequently,in modern classification systems,birds are considered a type of dinosaur—the only group of which that has survived to the present day.
Dinosaurs are a diverse and varied group of animals; birds,at over 9,000 species,are the most diverse group of vertebrate besides perciform fish.Paleontologists have identified over 500 distinct genera[4] and more than 1,000 different species of non-avian dinosaurs.Dinosaurs are represented on every continent by both extant species and fossil remains.Some dinosaurs are or were herbivorous,others carnivorous.Some have been bipedal,others quadrupedal,and others have been able to shift between these body postures.Many non-avian species developed elaborate skeletal modifications such as bony armor,horns or crests.Avian dinosaurs have been the planet's dominant flying vertebrate since the extinction of the pterosaurs.Although generally known for the large size of some species,most dinosaurs were human-sized or even smaller.Most groups of dinosaurs are known to have built nests and laid eggs.
类似问题2： 用英文表达关于恐龙的知识[英语科目]
Dinosaurs diverged from their archosaur ancestors approximately 230 million years ago during the Middle to Late Triassic period,roughly 20 million years after the Permian鈥揟riassic extinction event wiped out an estimated 95% of all life on Earth.[29][30] Radiometric dating of the rock formation that contained fossils from the early dinosaur genus Eoraptor establishes its presence in the fossil record at this time.Paleontologists think that Eoraptor resembles the common ancestor of all dinosaurs;[31] if this is true,its traits suggest that the first dinosaurs were small,bipedal predators.[32] The discovery of primitive,dinosaur-like ornithodirans such as Marasuchus and Lagerpeton in Argentinian Middle Triassic strata supports this view; analysis of recovered fossils suggests that these animals were indeed small,bipedal predators.
When dinosaurs appeared,terrestrial habitats were occupied by various types of archosaurs and therapsids,such as aetosaurs,cynodonts,dicynodonts,ornithosuchids,rauisuchians,and rhynchosaurs.Most of these other animals became extinct in the Triassic,in one of two events.First,at about the boundary between the Carnian and Norian faunal stages (about 215 million years ago),dicynodonts and a variety of basal archosauromorphs,including the prolacertiforms and rhynchosaurs,became extinct.This was followed by the Triassic鈥揓urassic extinction event (about 200 million years ago),that saw the end of most of the other groups of early archosaurs,like aetosaurs,ornithosuchids,phytosaurs,and rauisuchians.These losses left behind a land fauna of crocodylomorphs,dinosaurs,mammals,pterosaurians,and turtles.[11] The first few lines of early dinosaurs diversified through the Carnian and Norian stages of the Triassic,most likely by occupying the niches of the groups that became extinct.
Dinosaur evolution after the Triassic follows changes in vegetation and the location of continents.In the Late Triassic and Early Jurassic,the continents were connected as the single landmass Pangaea,and there was a worldwide dinosaur fauna mostly composed of coelophysoid carnivores and early sauropodomorph herbivores.[33] Gymnosperm plants (particularly conifers),a potential food source,radiated in the Late Triassic.Early sauropodomorphs did not have sophisticated mechanisms for processing food in the mouth,and so must have employed other means of breaking down food farther along the digestive tract.[34] The general homogeneity of dinosaurian faunas continued into the Middle and Late Jurassic,where most localities had predators consisting of ceratosaurians,spinosauroids,and carnosaurians,and herbivores consisting of stegosaurian ornithischians and large sauropods.Examples of this include the Morrison Formation of North America and Tendaguru Beds of Tanzania.Dinosaurs in China show some differences,with specialized sinraptorid theropods and unusual,long-necked sauropods like Mamenchisaurus.[33] Ankylosaurians and ornithopods were also becoming more common,but prosauropods had become extinct.Conifers and pteridophytes were the most common plants.Sauropods,like the earlier prosauropods,were not oral processors,but ornithischians were evolving various means of dealing with food in the mouth,including potential cheek-like organs to keep food in the mouth,and jaw motions to grind food.[34] Another notable evolutionary event of the Jurassic was the appearance of true birds,descended from maniraptoran coelurosaurians.[14]
By the Early Cretaceous and the ongoing breakup of Pangaea,dinosaurs were becoming strongly differentiated by landmass.The earliest part of this time saw the spread of ankylosaurians,iguanodontians,and brachiosaurids through Europe,North America,and northern Africa.These were later supplemented or replaced in Africa by large spinosaurid and carcharodontosaurid theropods,and rebbachisaurid and titanosaurian sauropods,also found in South America.In Asia,maniraptoran coelurosaurians like dromaeosaurids,troodontids,and oviraptorosaurians became the common theropods,and ankylosaurids and early ceratopsians like Psittacosaurus became important herbivores.Meanwhile,Australia was home to a fauna of basal ankylosaurians,hypsilophodonts,and iguanodontians.[33] The stegosaurians appear to have gone extinct at some point in the late Early Cretaceous or early Late Cretaceous.A major change in the Early Cretaceous,which would be amplified in the Late Cretaceous,was the evolution of flowering plants.At the same time,several groups of dinosaurian herbivores evolved more sophisticated ways to orally process food.Ceratopsians developed a method of slicing with teeth stacked on each other in batteries,and iguanodontians refined a method of grinding with tooth batteries,taken to its extreme in hadrosaurids.[34] Some sauropods also evolved tooth batteries,best exemplified by the rebbachisaurid Nigersaurus.[35]
There were three general dinosaur faunas in the Late Cretaceous.In the northern continents of North America and Asia,the major theropods were tyrannosaurids and various types of smaller maniraptoran theropods,with a predominantly ornithischian herbivore assemblage of hadrosaurids,ceratopsians,ankylosaurids,and pachycephalosaurians.In the southern continents that had made up the now-splitting Gondwana,abelisaurids were the common theropods,and titanosaurian sauropods the common herbivores.Finally,in Europe,dromaeosaurids,rhabdodontid iguanodontians,nodosaurid ankylosaurians,and titanosaurian sauropods were prevalent.[33] Flowering plants were greatly radiating,[34] with the first grasses appearing by the end of the Cretaceous.[36] Grinding hadrosaurids and shearing ceratopsians became extremely diverse across North America and Asia.Theropods were also radiating as herbivores or omnivores,with therizinosaurians and ornithomimosaurians becoming common.[34]
The Cretaceous鈥揚aleogene extinction event,which occurred approximately 65 million years ago at the end of the Cretaceous period,caused the extinction of all dinosaur groups except for the neornithine birds.Some other diapsid groups,such as crocodilians,sebecosuchians,turtles,lizards,snakes,sphenodontians,and choristoderans,also survived the event.[37]
The surviving lineages of neornithine birds,including the ancestors of modern ratites,ducks and chickens,and a variety of waterbirds,diversified rapidly at the beginning of the Paleogene period,entering ecological niches left vacant by the extinction of Mesozoic dinosaur groups such as the arboreal enantiornithines,aquatic hesperornithine,and even the larger terrestrial theropods (in the form of Gastornis,mihirungs,and "terror birds").However,mammals were also rapidly diversifying during this time,and out-competed the neornithines for dominance of most terrestrial niches.[38]
类似问题3： 恐龙的英文!草食‘肉食!
恐龙 Dinosaur
草食的 herbivorous
肉食的 carnivorous
类似问题4： 【用英文介绍恐龙有英文还要翻译】百度作业帮[英语科目]
Dinosaurs (Greek:δεινόσαυρος,deinosauros) were the dominant terrestrial vertebrate animals for over 160 million years,from the late Triassic period,about 230 million years ago (Ma),until the end of the Cretaceous period,about 65 Ma,when most of them became extinct in the Cretaceous–Tertiary extinction event.The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic period,and most paleontologists regard them as the only clade of dinosaurs to have survived until the present day.
Dinosaurs were a varied group of animals.Paleontologists have identified over 500 distinct genera and more than 1,000 different species of dinosaur,and remains have been found on every continent on Earth.Some dinosaurs were herbivorous,others carnivorous.Some were bipedal,others quadrupedal,and others were able to shift between these body postures.Many species developed elaborate skeletal modifications such as bony armor,horns or crests.Although generally known for their large size,many dinosaurs were human-sized or even smaller.Most major groups of dinosaurs are known to have built nests and laid eggs,suggesting an oviparity similar to that of modern birds.
The term "dinosaur" was coined in 1842 by Sir Richard Owen and derives from Greek δεινός (deinos) "terrible,powerful,wondrous" + σαῦρος (sauros) "lizard".Through the first half of the 20th century,most of the scientific community believed dinosaurs to have been sluggish,unintelligent cold-blooded animals.Most research conducted since the 1970s,however,has supported what has since become the scientific consensus view:that dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction.
Since the first dinosaur fossils were recognized in the early nineteenth century,mounted dinosaur skeletons have become major attractions at museums around the world.Dinosaurs have become a part of world culture and remain consistently popular.They have been featured in best-selling books and films such as Jurassic Park,and new discoveries are regularly covered by the media.As a result,the word "dinosaur" has entered the common vernacular,although its use and meaning in colloquial speech may be inconsistent with modern science.In English,for example,"dinosaur" is commonly used to describe anything that is impractically large,slow-moving,obsolete,or bound for extinction.
类似问题5： 【恐龙是怎样灭绝的英文表达】百度作业帮[英语科目]
How did the dinosaurs become extinct?This is a question that has stumped scientists ever since dinosaur fossils were first discovered.There are many theories as to how the dinosaurs became extinct.This page presents some of the most popular thoeries.Keep in mind that there is no absolutely proven theory.Noone knows for certain exactly why and how the dinosaurs became extinct.
Probably the most popular theory right now is the Asteroid Theory.According to this theory a large asteroid or comet collided with Earth about 65 million years ago.Scientists think that such a large collision would throw so much dust into the air that sunlight would not be able to shine and plants and animals would die.The dramatic changes in climate that resulted from this huge collision were too much for the dinosaurs.They were not able to survive.
Another theory that could explain how the dinosaurs became extinct is volcanic activity.A huge increase in volcanic activity at around 65 millions years ago could have pumped so much ash into the air that it blocked out the sun killing the dinosaurs.
Some scientists believe that there was a severe ice age.Throughout Earth's history there have been many ice ages.The last one ended about 10,000 years ago.A very severe ice age could have changed temperatures and frozen a lot of Earth's water.The dinosaurs would not be able live under such conditions and that is how the dinosaurs became extinct.
It has also been suggested that desease killed off the dinosaurs.A very deadly and contagious desease may have circulated among the dinosaurs forcing them to become extinct.
Still yet another theory is that the Earth just gradually changed in climate over a long time period and the dinosaurs were not able to adapt to the cooler,dryer climate.
There are probably other theories as to how the dinosaurs became extinct.One thing is for certain.All dinosaurs that we know of are extinct.How did all the dinosaurs become extinct?Maybe one of these theories is the right answer.However,it is difficult to explain why all the dinosaurs died out but many other animals survived.Perhaps one day we will know for certain how the dinosaurs became extinct.Until then we must speculate and continue the search for the answer to this great mystery of nature.
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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...