Dinosaurs were reptiles that once ruled the earth. At present, there are more than 800 known dinosaur species, which are divided into two categories: Diptera and Bird Diptera. Among them, there are vegetarians and meat eaters; Some are stupid, others are flexible; Some crawl on land, some jump and run, and some fly in the air. In recent years, an upsurge of digging, researching and developing dinosaurs has risen quietly all over the world, and attracted the attention of biologists, geographers, sociologists and even philosophers. The countries with the largest dinosaur resources in the world are China, the United States, Canada, Mongolia, Argentina and Brazil. The most famous places in China are Yunxian County in Hubei, Erenhot in Inner Mongolia, Xixia in Henan, Zigong in Sichuan, Lufeng in Yunnan and Heyuan in Guangdong. Only Yunxian County, Hubei Province can really compare with Heyuan City. Experts found that there are two similarities in dinosaur resources between Heyuan City and Yunxian County in Hubei Province. First, the first discovery of dinosaur eggs was in the 1970s, and the real discovery of dinosaur eggs was in1March, 996. 1dinosaur bones were found in Yunxian County, Hubei Province in July, 1997. According to the expert's appraisal, this is the first and very rare birthplace of the dragon egg fossil in China, and the keel fossil was found in Heyuan City in July 1999, which is the second birthplace of the dragon egg in China. The first dinosaur bones related to "dinosaurs" were discovered in 1920. After more than 100 years, many explorers and scholars discovered and studied the fossils belonging to dinosaurs, but almost none of them were correctly identified.

184 1 year, paleontologist richard owen put forward the word "dinosaur" for the first time based on some large reptile fossil specimens, which originated from the Greek words "deinos" (meaning terror) and "sauros" (meaning lizard) and was translated as "dinosaur" by Japanese and China scholars. After the concept of "dinosaur" came out, scholars carefully observed and identified the dinosaur fossils found, and carried out further excavation work. The excavation of Asian dinosaurs was not carried out until after the 20th century. The earliest dinosaur fossils in China were found in 1902 (Heilongjiang), and then a large number of dinosaur fossils were found in many parts of the country, including Lufeng in Yunnan, Laiyang in Shandong, Zigong in Sichuan, Tibet, Inner Mongolia and other places. Lufeng and Zigong also established dinosaur museums respectively, and held the "Lufeng First Dinosaur Festival" in 199 1. China can be called "the dinosaur country of the world".

"dinosaur" is not a taxonomic term, but a popular name. Dinosaurs are divided into two groups: 1. The main feature of sauropods is that the structure of ilium, ischium and pubis that make up the belt is similar to that of other reptiles, that is, the belt with three guns or three guns. It is divided into two suborders: (1) theropod: Tyrannosaurus Rex, Deinonychus, Yuelong, Slender Dragon, etc.

(2) sauropods: Liang Long, Lei Long, Lufenglong, Mamenxilong, etc.

2. The main feature of flapping-wing machine is that the structure with bone is similar to that of birds, and the pubic bone is backward, that is, the four-shot or four-shot belt, and there are also front teeth and buccal muscles. It is divided into five suborders:

(1) ornithopoda: Iguanodon, duck-billed dragon, etc.

(2) Ceratosaurus: protoceratops, Ceratosaurus, Parrotbill, etc.

(3) Ankylosaurus: Arthropod, Spinosaurus, Ankylosaurus, etc.

(4) Stegosaurus: Stegosaurus, etc.

(5) Leonidas: pachycephalosaurus, etc.

The biggest difference between dinosaurs and other reptiles lies in the posture of standing and the way of marching. Dinosaurs are completely upright, with their limbs directly under their bodies. This structure has advantages over other kinds of reptiles (such as crocodiles, whose limbs extend outward) when walking and running. According to the different structural characteristics of dinosaur belts, they can be divided into two categories: sauropods and ornithosaurs. The difference between them lies in the band structure: the band of ischium is three shots, the pubic bone extends forward under the intestinal bone, and the ischium extends backward, similar to lizards; The waistband of ornithischia expands greatly in the front and back of the intestinal bone, and there is a large pubic protrusion on the front side of the pubic bone, which extends below the intestinal bone, and the back side extends parallel to the ischium to the front and bottom of the intestinal bone. So from the side, the pelvis is radiant. Whether sauropods or birds, their belts leave a small hole between the intestine, ischium and pubis, which other reptiles do not have. It is this hole that shows that compared with all other reptiles of all orders, the two orders called dinosaurs are the closest.

Sauropods are divided into sauropods and theropods. Sauropods are divided into protosauropods and sauropods. Protosauropods mainly lived in the Late Triassic to the Early Jurassic, and were omnivorous-vegetarian medium-sized dinosaurs. Sauropods mainly live in Jurassic and Cretaceous. Most of them were giant vegetarian dinosaurs. Small head, long neck, long tail and small teeth in spoon shape. The famous representative of sauropod is Mamen Xilong, which was produced in China, Sichuan and Gansu in the Late Jurassic. The neck length of 19 cervical vertebra is about half of the body length. Theropod dinosaurs lived from the Late Triassic to the Cretaceous. They are all carnivorous dragons, walking on two feet, with sharp claws on their toes, well-developed heads and teeth as sharp as daggers or knives in their mouths. Tyrannosaurus rex is a famous representative. The suborder ornithopoda can be divided into five categories: ornithopoda, stegosaurus, Ankylosaurus, Ceratosaurus and pachycephala. Ornithopoda is a group with the most fossils in ornithopoda and even the whole dinosaur category. They walk on two or four feet. The mandible has a single anterior tooth bone, and the teeth only grow on the cheeks. The crowns of the maxillary teeth bend inward and the crowns of the mandibular teeth bend outward. They lived from the late Triassic to the Cretaceous, and they were all vegetarian dinosaurs. Stegosaurus was a quadruped with an upright bone plate on its back and two pairs of bone spurs on its tail. It mainly lived from Jurassic to early Cretaceous, and it was the first extinct dinosaur. Ankylosaurus was short and strong, covered with a bone deck, and ate plants, mainly living in Cretaceous. Ceratosaurus is a four-legged vegetarian dinosaur. The back of the skull expanded into a cervical shield, most of which lived in the late Cretaceous. The parrot-billed dragon found in northern China belongs to the ancestor type of Ceratosaurus. The main characteristics of pachycephalosaurus are that the skull is swollen and thick, the hole is closed, and the pubic bone in the pelvis is rejected by the ischium and does not participate in the formation of the band. It mainly lived in Cretaceous. Allosaurus, Allosaurus, Westerly Dragon, Tyrannosaurus Rex Hypsilophodon Iguanodon Mutant Dragon Ouranosaurus, Fearless Dragon Equijubus, High Kissing Dragon Altirhinus, Nanyang Longnan Yanglong Shenlong Lurdusaurus Conlon Kongnasaurus Desert Dragon Valdosaurus Fukuisaurus Jinzhou Dragon Jinzhou Dragon Jinzhou Dragon Front Bark Protocoratosaurus R. Ellino Dragon Leaellynasaura Atlas Popular Science Dragon Yatro Dragon Siluosaurus Fast Dalong Dragon Qan Taslong Lightning Beast Dragon Fire Dragon Cave Vertebra Dragon Xuanhua Dragon Narrow Panlong Pelican Zuni Ceratosaurus Ancient Ceratosaurus Chaoyang Dragon Liaoning Ceratosaurus. Hongshan Dragon Hongshan Dragon Wuer River Dragon Wuer Dragon Shengshan Longsheng Mountain Dragon Chagan Noerlong Nouro Salon About Ba Long Qiao Ba Sub-polar Dragon Super Dragon Asian Dragon Augustine Dragon Augustine Dragon Mongolia Dragon Mongolia Dragon Mongolia Dragon Niger Ronniger dragon three Dragon. Liar Dragon Histriasaur Lei Youshou Dragon Lei Long Rebbachisaurus Limaysaurus Amagat Dragon Amargasaur Amazon Dragon Open Qinglong Putin Dragon Jiangshan Dragon Jiangshan Dragon Cartilage Dragon arago Dragon Aragon Dragon Deformed Dragon Pelorosaurus Austrosauru Bird Face Dragon Ornithopsi Addicts Dragon Venenosaurus Star. Astrodon Eucamerot Side-empty Dragon Pleurocoel Sonorasaur Poseidon Dragon Cedarosaurus Gao Long Alguron Chira Dragon Krasmodosa Jute Dragon Utiguron Hill Bouteron Cube Tyrone Long Big Tail Long Ma Lu Gu Long Strange Noon Toom Wagulong Buwanlong Puvian Gulong Tidal Dragon Bilatitan Gobi Desert Dragon Gobi Desert Andean. Long An Delong Malawi Long Malawi Long Ding Spinosaur Altispinaj Spring Vertebrate Dragon Acorus Dragon Capital Long En Ba Long Ba Long Ba Long Yinlong Dragon and He Long Shenlong Akita Dragon Vacchino Dragon Vogt Walgettosuchus Karamay Dragon Kelm. Ai pterosaurs used to be afraid of odontosaurus, spinosaurus, spinosaurus, stegosaurus, stegosaurus, erectus and African dinosaurs. Tugulong, Siamese Dragon, Guanlong, Ba Long Knicks, E Long, Amber, Baozuka Fukui. Top dragon, dwarf dragon, new pterosaur, shark dragon, giant dinosaur, Bahamian dragon, Chilean dragon. Gun dragon is like a Kinnarimos, a Hapimos, a seven-town bird dragon, a face dragon, a colorful snake dragon, a Kakuru, an Akron and a Ba Long. Ned colbert, Shandong Dragon, Scipionyx, Yaverlandia, Sinosauropoda, Cathaysauropoda, Mei. The archaeopteryx of the genus Blind stinkbug is similar to Timimus, Yixianosaurus, Microvenator, Caudipteryx, Microraptor and Microraptor (M.gui). Chinese bird dragon (Sinornithosaurus) Tommy Tam first Tyrannosaurus (Eotyrannus) Siamese dragon (Tonouchisaurus) China hunting dragon (Sinornithoides)sinosonasus. Archaeornithomimus, Shenzhou Dragon, Shanlong, Trident Dragon, Pelecanimimus, Tooth-cutting Dragon, Rapator and Ornithodesmus. Utahraptor Deinonychus gracilis, Alashan Dragon, Achilles Dragon, North Ticket Alashan Dragon, Protopterosaur. Unenlagia, Anchiornis, Late Cretaceous-Ratatosaurus, coelacanth, Mifunesaurus, Newtonsaurus and Quilmesaurus. Sidormimus, Sigilmassasaurus, Tsuchikurasaurus, Genusaurus, E Long, Dryopteris, Genyodectes. Jubbulpuria is like bird-buttock dragon, muscle dragon, E Long, Rugops, Northwest Argentinean dragon, Noasaurus, Velocisaurus. Raptors, E Long, Allosaurus, Tarasco, E Long, Abelilon, Majungasaurus and Aokalong. Rat dragon, Indian dragon, right-angled dragon, Majungasaurus, Wang lung, Lagaron, African dragon, Spinosaurus, Triceratops. Aniksosaurus, Little Hunting Dragon, Bagaraatan, Archaeornithoides, Heavy Legged Dragon, Diplotomodon, Swamp Bird Dragon, Elopteryx, Labocania, Ricardoestesia. European Xenopus laevis, Xenopus laevis, Bird Dragon, Forest Dragon, Goat Dragon, La Hornavis, Biped Dragon and Mi Long. Shilong, Golden Crown Dragon, Dinosaur Dragon, Allosaurus, Albertosaurus, Gorgosaurus, Blethen Dragon, Nanotyrannus. Stygivenator is afraid of Tyrannosaurus Rex (Dinosaur), Shanshan Dragon is afraid of Dragons (Daspletosaurus), Tyrannosaurus Rex (Tyrannosaurus Rex), Tyrannosaurus Rex (Luanchuan Tyrannosaurus Rex). Nanyang Dragon, Polo gouveia Dragon, Ostrich Dragon, Byron Dragon, Bird Dragon, Toothless Dragon, Narrowclaw Dragon, Teratosaurus. Like Orcomimus, Garudimimus, Gallimimus, Goose Dragon, Emu Dragon, Bird Dragon, Ostrich Dragon, Struthiomimus, Sinornithomimus of China. Nomingia, Heyuan Dragon, Heyuan Dragon, Paeonodon, Caenagnathus, Asia Paeonodon, Chirostenotes, Elmisaurus, Buried Dragon, Citipati, Conchoraptor, Female Camel, Ingenia. Oviraptor, Alvarezsaurus, Patagonian Yakus) Monoclaw Dragon, Parvicurus, Bird-faced Dragon, Shuvuuia, Achilles Dragon, Bambiraptor, Korean Dragon, Megaraptor, Pyroraptor, Variraptor, Atrociraptor, Dromaeosaurus) Some dinosaurs have feathers, such as Bambi Raptor.

Erlianlong, Inner Mongolia Dragon, Beilong, Secret Dragon, Erlilong and Inner Mongolia Dragon. Segnosaurus, Therizinosaurus, Notohypsilophodon, Bugenasaura, Tooth Dragon, Talenkauen, Orodromeus, Parksosaurus. Lophorhothon, Rhabdodon, Mochlodon, Zalmoxes, Ankylosaurus, Bird Dragon, Oligosaurus, Gaspari Nylon. Chief dragon (Loncosaurus), AnaBuys dragon (Anabisetia), more like concave tooth dragon (Pararhabdodon), flat hip dragon (Craspedodon), wide hip dragon (Hironosaurus) than hall dragon (Bihariosaurus). Mandschurosaurus, Orthomerus, Secernosaurus, Duckbilled Dragon, Telmatosaurus, Gilmoreosaurus, Swamp Dragon, Astaing Dragon. Kadosaurus, Pterosaur, Dragon, Qingdao Dragon, Qingdao Dragon, Japanese Dragon, Parasaurolophus and Japanese Dragon. Heilongjiang Dragon, Jaxosaurus, Blue and White Dragon, Fan-crowned Swan Dragon, Louro Titanosaurus, barrs Bodilong, Guanlong, Hypax Dragon and Duckbilled Dragon. Small duck-billed dragon, bellows dragon, double temple dragon, killer whale, short-tailed dragon, dragon dance, dragon dragon. Griffin Dragon (Gryposaurus), Little Noble Dragon (Kritosaurus), Anatotitan Dragon (Anatotitan), Edmonton Dragon (Edmontosaurus), Shandong Dragon (Shantungosaurus), Taniurus Dragon (ProSaurolophus) and Sauropoulos Dragon. Tianzhelong (parrot dragon) Chinese parrot beak dragon (P.sinen) Mei Laiying parrot beak dragon (P.meileyingensis) Pachycephalosaurus Styx dragon. Small leader, heavy leader, cephalopoda, bulkhead, ball leader, sword leader, flat leader, round leader. Micro-spinosaurus, wannan dragon, longshu dragon, Qinling dragon and Kubin dragon decorated with Goyocephale. Giant neck dragon, cedar dragon, Egyptian dragon, curved dragon, curved dragon, northern dragon, northern dragon. Vineyard Dragon (Ampelosaurus) Gao Qiao Dragon (Hyposaurus) Madzar Dragon (Pellegrinisaurus) Heavy Dragon (Epachthosaurus) Argentine Dragon. Slender dragon (Lirainosaurus) Antarctic dragon (Antarctosaurus) bonita dragon (Bonitasaura) Labrador dragon (Nemegtosaurus) Extraordinary dragon (Quaesitosaurus) La Plata dragon. Alamosaurus, Argyrosaurus, Titanosaurus, Isisaurus, Lin Konglong, Aeolosaurus, Gondwanatitan, Houwei Dragon. New ken dragon Rocarone, Salt Dragon, Ear Dragon, Tavilon, Domenicolon, Chiroposaurus, Torarosaurus. Protosauropod dinosaur Banlong, Tianshan Dragon, Anqilong, sauropod dinosaur Mamenqilong, Earthquake Dragon, Puzzled Dragon. Brachiosaurus, True Dragon, Stegosaurus, ken dragon, Jialing, Stegosaurus, Tuojiang Dragon. Ankylosaurus Scelidosaurus, Lin Long, Acanthosaurus, gaston Dragon, Stegosaurus, Tilosaurus, Cetacodon. Ankylosaurus spiny Ankylosaurus (Polacanthus) Sauroplites (Hoplitosaurus) desert dragon (Shamosaurus) Tianchisaurus (Cedarpelta) Cedar Ankylosaurus, Montenegro Dragon, Beishan Dragon, Prino Dragon, Lei Long, Stegosaurus, Cologne, Papaya. Carnivorous dragons (Sarcolestes) abandoned mechanical dragons (Anoprosaurus, Nodososaurus, Lin Long and Niobrara Saurus). Animantarx, Edmontonian Ankylosaurus, Syringosaurus, Panlongus, Sauropelta, Baishanlong, Maleevus, Yamashita, Talarurus.