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Dimetrodon lat Dimetrodon dvi miri zubiv rid sinapsid yaki zhili v cisuralsku epohu rannoyi permi blizko 295 272 mln rokiv tomu Nalezhit do rodini Sphenacodontidae Bilshist vidiv rodu dosyagayut 1 7 4 6 m zavdovzhki j vazhat 28 250 kg ale najpomitnishoyu osoblivistyu dimetrodona bulo velike spinne vitrilo utvorene podovzhenimi shipami sho vidhodyat vid hrebciv Vin mig hoditi tilki na chotiroh nogah i mav visokij vignutij cherep z velikimi zubami riznogo rozmiru Najbilshe skam yanilostej bulo znajdeno na pivdennomu zahodi SShA bilshist z nih pohodit z geologichnogo rodovisha pid nazvoyu Chervoni shari Tehasu ta Oklahomi U 2001 jogo skam yanilosti takozh buli znajdeni v Nimechchini a z chasu pershogo viznachennya rodu v 1878 roci bulo nazvano ponad desyatok vidiv Dimetrodon Period isnuvannya cisuralij gvadelupij assel roud 295 270 mln r t PreꞒ Ꞓ O S D C P T J K Ꝑ N Skelet Dimetrodon limbatus Derzhavnij muzej prirodoznavstva Karlsrue Biologichna klasifikaciya Carstvo Tvarini Animalia Tip Hordovi Chordata Klada Sinapsidi Synapsida Rodina Sphenacodontidae Pidrodina Sphenacodontinae Rid Dimetrodon Cope 1878 Tipovij vid Dimetrodon limbatus Cope 1877 yak Clepsydrops limbatus Sinonimi Sinonimi rodu Embolophorus Cope 1878Theropleura Cope 1880Bathyglyptus Case 1911Eosyodon Olson 1962 Sinonimi vidiv Clepsydrops limbatus Cope 1877Clepsydrops gigas Cope 1878Clepsydrops natalis Cope 1878Dimetrodon gigas Cope 1878Dimetrodon incisivus Cope 1878Dimetrodon rectiformis Cope 1878Embolophorus dollovianus Cope 1878Dimetrodon semiradicatus Cope 1881Clepsydrops macrospondylus Cope 1884Dimetrodon platycentrus Case 1907Theropleura grandis Case 1907Bathyglyptus theodori Case 1911Dimetrodon maximus Romer 1936Eosyodon hudsoni Olson 1962 Vikishovishe Dimetrodon U populyarnij kulturi dimetrodona chasto plutayut z dinozavrami abo suchasnikami dinozavriv ale vin vimer priblizno za 40 miljoniv rokiv do yihnoyi poyavi Hocha za zovnishnim viglyadom i fiziologiyeyu dimetrodon shozhij na reptilij vin nabagato blizhchij do ssavciv nizh do reptilij hocha i ne ye pryamim predkom ssavciv Dimetrodon vidnositsya do nessavcevih sinapsid grupi yaku tradicijno ale nepravilno nazivayut ssavcepodibnimi reptiliyami ale zaraz vona vidoma yak stovburovi ssavci Ce ob yednuye dimetrodona razom zi ssavcyami v kladu Synapsida v toj chas yak reptiliyi pomisheni v okremu kladu Sauropsida Odinochni otvori v cherepi za kozhnim okom vidomi yak skronevi otvori fenestri ta inshi osoblivosti cherepa vidriznyayut dimetrodona i spravzhnih ssavciv vid bilshosti rannih zavropsid Dimetrodon jmovirno buv odnim z vishih hizhakiv ekosistem cisuralu sho harchuvavsya riboyu i chotirinogimi vklyuchayuchi reptilij i amfibij Menshi vidi Dimetrodon mogli vidigravati inshi ekologichni roli Vitrilo dimetrodona moglo vikoristovuvatisya dlya stabilizaciyi hrebta abo dlya obigrivu ta oholodzhennya tila yak forma termoregulyaciyi Deyaki nedavni doslidzhennya Huttenlocker 2010 stverdzhuyut sho vitrilo bulo b neefektivnim dlya vidvedennya tepla vid tila oskilki buli vidkriti veliki vidi z malenkimi vitrilami a dribni vidi z velikimi vitrilami sho po suti viklyuchaye termoregulyaciyu yak osnovne priznachennya vitrila Vitrilo najimovirnishe vikoristovuvalosya dlya demonstraciyi vklyuchayuchi pogrozi supernikam abo zalicyannya pered potencijnimi partnerami OpisRekonstrukciya D giganhomogenes z ogolenimi kinchikami hrebciv Dimetrodon buv chotirinogim sinapsidom z grebenem na spini ta najimovirnishe mav napivrozkinutu postavu sho bula chimos serednim mizh postavoyu ssavcya i yashirki a takozh mig hoditi u bilsh vertikalnomu polozhenni vidrivayuchi tilo i bilshu chastinu abo ves hvist vid zemli Bilshist vidiv Dimetrodon mali dovzhinu vid 1 7 do 4 6 m i za ocinkami vazhili vid 28 do 250 kg Najmenshij z vidomih vidiv D teutonis buv zavdovzhki blizko 60 sm i vazhiv 14 kilogramiv Veliki vidi dimetrodoniv buli odnimi z najbilshih hizhakiv rannoyi permi hocha blizkosporidnenij tapenozavr vidomij za fragmentami skeleta u desho molodshih porodah mig buti she bilshim priblizno 5 5 metriv zavdovzhki Cherep Odin velikij otvir z oboh bokiv potilici pov yazuye dimetrodoniv zi ssavcyami j vidriznyaye jogo vid bilshosti rannih zavropsid yaki abo ne mali otvoriv abo mali dva Vvazhayetsya sho taki osoblivosti yak vistupi na vnutrishnij storoni nosovoyi porozhnini ta vistup na zadnij chastini nizhnoyi shelepi ye chastinoyu evolyucijnogo progresu vid rannih chotirinogih nazemnih hrebetnih do ssavciv Cherep dimetrodona visokij i stisnutij lateralno z bokiv Ochni yamki roztashovani visoko i v glibini cherepa Pozadu kozhnoyi ochnoyi yamki ye odin otvir yakij nazivayetsya infratemporalnim otvorom infratemporal fenestra Dodatkovij otvir u cherepi nadskronevu yamku supratemporal fenestra mozhna pobachiti yaksho divitisya zverhu Zadnya chastina cherepa potilicya oriyentovana pid nevelikim kutom dogori sho ye spilnoyu risoyu z usima inshimi rannimi sinapsidami Verhnij kraj cherepa opukloyu dugoyu spuskayetsya vniz do kinchika mordi Kinchik verhnoyi shelepi utvorenij peredshelepnoyu kistkoyu pidijmayetsya nad chastinoyu shelepi utvorenoyu verhnoyu shelepoyu utvoryuyuchi verhnoshelepnu shodinku Useredini ciyeyi shodinki znahoditsya diastema promizhok u zubnomu ryadu Jogo cherep buv pobudovanij vazhche nizh cherep dinozavra Zubi Rozmir zubiv silno variyuye po dovzhini shelep sho dalo nazvu Dimetrodon sho oznachaye dvi miri zuba vkazuyuchi na nabori malih i velikih zubiv Odna abo dvi pari ikl veliki zagostreni shozhi na sobachi ikla vidhodyat vid verhnoyi shelepi Veliki rizci takozh prisutni na kinchikah verhnoyi ta nizhnoyi shelep voni korenyatsya v peredshelepnih i nizhnoshepelnih kistkah Dribni zubi prisutni navkolo verhnoshelepnoyi shodinki i za iklami ta stayut menshimi vglibini shelepi Bagato z jogo zubiv najshirshi v serednij chastini j zvuzhuyutsya blizhche do shelep nadayuchi yim formu krapli Kraplepodibni zubi ye unikalnimi dlya dimetrodona ta inshih blizkosporidnenih sfenakodontiv sho dopomagaye vidrizniti yih vid inshih rannih sinapsid VidiVid Avtor Misceznahodzhennya Status Sinonim Zobrazhennya Dimetrodon angelensis Olson 1962 Tehas Validnij Leidy 1854 Ostriv Princa Edvarda Validnij Previously known as Bathygnathus borealis Dimetrodon booneorum Romer 1937 Tehas Validnij Dimetrodon cruciger Cope 1878 Tehas Sinonim Dimetrodon dollovianus Case 1907 Tehas Validnij Embolophorus dollovianus Cope 1888 Dimetrodon giganhomogenes Case 1907 Tehas Validnij Dimetrodon gigas Cope 1878 Tehas Sinonim Dimetrodon grandis Clepsydrops gigas Cope 1878 Dimetrodon grandis Romer and Price 1940 Oklahoma Tehas Validnij Clepsydrops gigas Cope 1878 Dimetrodon gigas Cope 1878 Theropleura grandis Case 1907 Bathyglyptus theodori Case 1911 Dimetrodon maximus Romer 1936 Dimetrodon incisivus Cope 1878 Tehas Sinonim Dimetrodon limbatus Dimetrodon kempae Romer 1937 Tehas nomen dubium Dimetrodon limbatus Romer and Price 1940 Oklahoma Tehas Validnij Clepsydrops limbatus Cope 1877 Dimetrodon incisivus Cope 1878 Dimetrodon rectiformis Cope 1878 Dimetrodon semiradicatus Cope 1881 Dimetrodon longiramus Case 1907 Tehas Sinonim Dimetrodon loomisi Romer 1937 Tehas Oklahoma Validnij Dimetrodon macrospondylus Case 1907 Tehas Validnij Clepsydrops macrospondylus Cope 1884 Dimetrodon platycentrus Case 1907 Dimetrodon milleri Romer 1937 Tehas Validnij Dimetrodon natalis Romer 1936 Tehas Validnij Clepsydrops natalis Cope 1878 Dimetrodon occidentalis Berman 1977 Arizona Nyu Mehiko Utah Validnij Dimetrodon platycentrus Case 1907 Tehas Sinonim Dimetrodon macrospondylus Dimetrodon rectiformis Cope 1878 Tehas Sinonim Dimetrodon limbatus Dimetrodon semiradicatus Cope 1881 Tehas Sinonim Dimetrodon limbatus Dimetrodon teutonis Berman et al 2001 Nimechchina ValidnijPrimitkiAngielczyk Kenneth D 2009 06 Dimetrodon Is Not a Dinosaur Using Tree Thinking to Understand the Ancient Relatives of Mammals and their Evolution Evolution Education and Outreach angl T 2 2 s 257 271 doi 10 1007 s12052 009 0117 4 ISSN 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PosilannyaPalaeos Vertebrates Synapsida Sphenacodontia palaeos com Procitovano 9 lyutogo 2024 Ce nezavershena stattya z paleontologiyi Vi mozhete dopomogti proyektu vipravivshi abo dopisavshi yiyi
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