Ancient dabbobi masu rarrafe. degeneration

Ɗari biyu da miliyan shekaru da suka wuce da Masters duniya tamu ne daɗaɗɗe dabbobi masu rarrafe. Yana da aka kambi na halittar lokaci! Babu sauran dabba ba a gudanar da "ikon" muddin dabbobi masu rarrafe. Akwai mutane da yawa - tsoho kadangaru, crocodilians, tuatara, amma koli na ta ci gaba ta fara, ba shakka, da dinosaur. Zveroyaschery rayu a ko'ina: a ƙasar, a ruwa, a cikin iska!

A kimiyya na dinosaur

Ancient dabbobi masu rarrafe a bari a baya mai yawa asirai cewa ba kowa yana da ikon ya warware. Daga ragowar kasusuwa zveroyascherov da dama m za ka iya "zana" hoto na baya: da na waje data lizard, ta hanyar rayuwa da kuma sauransu. Wannan shi ne abin da masana binciken burbushin halittu. Su aiki ne a bit kamar jami'in aikin: a karye shards za su mai da dukan tsawon rai na wata katuwar halitta mai rarrafe! Ga ka bukatar ka iya competently ka hada diraya da dabaru da kuma tunanin, daukana up kankanin jẽfo wani ɓaɓɓake daga "da rayuwa" na wani dinosaur. Sabuntawa na zane-zane na baya - shi ne ba aiki mai sauki. Ba tare da wata rijiya-raya tunanin da m tunanin ba zai iya yi a nan. Binciken burbushin halittu - shi ne wasu har wani m kimiyya: ko alama bai isa a kula hujja da dama na ta gaskata iya taka muhimmiyar rawa a cikin jerin abubuwan da suka faru na zamanin ... da Age na dinosaur!

bit rarrabuwa

Dabbobi masu rarrafe Animals - wannan quite peculiar kungiyar halittu masu rai. Gaskiyar cewa aji ne zuwa kashi subclasses, mafi m, kuma mafi tsufa na wanda - abin da ake kira anapsid. A karshen su ya zama dadaddun ɗari biyu da miliyan shekaru da suka wuce. A raba reshe na wannan kungiyar - Synapsid. Wannan shi ne magabatan na dabbobi masu shayarwa. Synapsid kansu ba su rayu har zuwa ganiya da zuriyarsa. Har yanzu daga baya ya zo da wani offshoot Diapsid, wanda bi da bi ne zuwa kashi lepidosauria da archosaurs. Tsohon hada duka biyu rai a zamaninmu, kadangaru, macizai, tuatara, da kuma wasu dadaddun marine da yara tare da dogon serpentine wuyõyinsu, da ake kira plesiosaurs. By archosaurs hada crocodiles, pterosaurs da dinosaur. Wadannan tsoho dabbobi masu rarrafe kusan duk bitattu. Kawai crocodiles. Shin, sũ ne - kadai zuriyar zamanin d dabbobi masu rarrafe? Ba daidai!

feathered al'adunmu

Direct zuriyar dinosaur ne tsuntsãye. Ko da yake shi ne ba dabbobi masu rarrafe aji, amma shi ne su feathered tsarin da kuma bayyanar reminiscent na zamanin d dinosaur. A lokaci guda ji bambanci: tsuntsaye - zuriyar ba tashi zveroyascherov irin pterosaur Quetzalcoatl, wato "ƙasa" na dinosaur! Tashi dinosaur zama dadaddun, da barin wani al'adunmu.

Mutuwar wani daular

Ancient tsuntsaye suna sosai bambance bambancen da yawa, a kamala da kuma kungiyar da su ba za a iya kwatanta ta da wani sauran rukuni na dabbobi. Zveroyascherov karatu da kuma ci gaba da karatu tare da mafi ban sha'awa fiye da sauran dadaddun dabbobi. A auka daga cikin "Empire na dinosaur" har yanzu Halicci yawa theories, muhawara, versions. Domin duk abin da dalili, akwai ba da mutuwa na mulki daular kusa da masu rarrafe duniya, shi ya ɗauki 'yan shekaru miliyan kafin Duniya ya iya warke bayan wani duniya bala'i. Lokacin da shi duka ya faru, da giant dinosaur ba same ta wuri. Suka mutu fita har abada. A maimakon haka, akwai wasu - kyau da kuma iko da dabbobi! Amma muna da wani abu da ka riga san cewa wani karamin rukuni na zuriyar zamanin d dabbobi masu rarrafe sun iya su tsira, kuma a yau ta mambobi ne duk kewaye da mu ... Yana - tsuntsaye!