
raranimus

madhya permian theraapsidukalude vamshanasham sambhavicha oru janussaanu raranimus. chainayile gansuvile killian parvathanirakalil ninnu puranthallappetta kwingtoushaan roopeekaranathinte dashanco pradeshathu ninnu 1998 ll kandethiya bhagika thalayottiyil ninnaan 2009 ll ithu vivarichathu. pilkkala sasthanikal ulppedunna cled therapsidayile ettavum adisthaana amgamaanu eee januss.
vivaranam.
"raranimus" pilkkala therapsidukalumaayum poorvvikarkku spenacodondiayumayum niravadhi savisheshathakal pankidunnu. thalayottiyil nannayi samrakshikkappetta oru rostrum adangiyirikkunnu. murivukal aavarthikkukayum randaamathe naaykkale avayude pinbhaagathu neiyukayum cheiyunnathinaal pallukal "raranimasinu" mamsabhojiyaaya oru jeevitashailiye soochippikkunnu. murivukal roopashaasthraparamaayi kooduthal uruthirinja theriodondukalil kaanappedunnavayodu saamyamullathaan. rund lingvio-labiali compressed naayakalude saannidhyam "raranimus"-nte oru diagnostic savisheshathayaanu. rund pravarthanakshamamaaya naaykkalude saannidhyam sphenacodondidukalude savisheshathayaanu, eee avastha "rananimus" allathe mattethenkilum therapsidilum kaanapedunnilla. ennirunnaalum, eee naaykkalude nertthathum compress cheythathumaaya aakruthi theraapsidukalude oru savisheshathayaanu, samanamaaya valippathilulla sphenacodondidukalude naaykkal kooduthal valia thothil nirmmichirikkunnu. dimetroden", "tetraasettoppukal" ennee sinaapsidukalil kaanappedunnathin samaanamaayi preekaanainukal cheruthum munvashath serated aanu.
thalayottiyude annaakk mekhalayil, vomarinte muun prakriya chevanayude munvashathe attathu premaxilla abhimukeekarikkunnu. eee ovarlaappu denocephaliansilum kaanapedunnu. ennirunnaalum, mattethoru therapsidil ninnum vyathyasthamayi, chonaykku hraswavum naalaamathe murivukalude nila muthal aadyathe naaya vare maathrame neendu nilkkoo.
phylogenetics.
athinte prarambha vivaranathodoppam nadatthiya oru phylogenetic vishakalanam anusarichu, "raranimus" adisthaana therapsidaayi kanakkaakkappedunnu. tetraasettoppukal" oru therapsid aano atho kooduthal basel pelicosorano enna kaaryatthil chila vivaadangalundu. aduthide nirddeshichathupole "tetraasettoppukal" oru therapsid aanenkil, ariyappedunnathil vachu ettavum pazhakkameriyathum ettavum adisthaanaparavumaaya onnayirikkum ithu, ithu niravadhi dasalaksham varshangal kondu "raranimasine" marikadakkum. ennirunnaalum, pilkkala padanangal therapsidaykkullil "tetraasettoppukal" sthaapikkunnathine chodyam cheythittundu, koodaathe 2009 leeii "raranimus" upayogichulla phylogenetic vishakalanam eee janussine cledinu purathaanu sthaapikkunnathu.
"madhya permiyante aadyakaala rodian ghattathil nikshepikkappetta stharangalilaan "raranimus" sambhavikkunnath. aadyakaala permian kaalaghattatthil rodian vamshathinu munbu sphenacodontidukal ettavum vaividhyamaarnnavayaayirunnu, ennirunnaalum rodian-verdian athirthikkaduthekku athunnathuvare therapsidukal vaividhyamaarnna oru groupaayi prathyakshappettilla. ithu phoosil rekhakalil oru roopaghadanayum thaalkkaalika vidavum srishtichu, eee samayat theraapsidukalude uthbhavam oolsans ekstikshan ennu vilikkappedanam.
oolsante vamshanaashathil ninnu therapsid avashishtangalude pothuvaaya abhaavathil, grouppinte uthbhavavum prarambha vaividyavalkkaranavum vishadeekarikkunnathinu vyathyastha sidhaanthangal vikasichittundu. oru sidhaantham soochippikkunnathu edavelakalil eppozhengilum drutha apomorphy shekharanathiloode therapsidukal vegathil vaividhyavalkkarikkappettum mattonn 35 emm. eiii. vareyulla kaalayalavil therapsidukal kramena parinamichuvennum nirddeshikkunnu. aduthide oolsan vamshanaashasamayath chainayil ninnu kandethiya "raranimus" polulla basel theraapsidukalude avashishtangal maathrame kandethiyittulloo. eee vidavil nilavilundennu ariyappedunna mattu theraappidukalil "sinophonous", "stenosibus" enniva ulppedunnu.
liu muthalaayavayil ninnu parishkaricha oru cladogram chuvadeyundu.", 2009 oolsan vidavil sambhavikkunna therapsidukalumaayulla" "raaraanimasinte" "phylogenetic bandhangal chithreekarikkunnu