
clevosorukal

triasik, jurassic kaalaghattangalil ninnu vamshanasham sambhavicha rhinecosephalian uragangalude oru koottamaanu clevosorukal.
charithravum nirvachanavum.
1910 muthal eee groupile amgangal ariyappedunnundengilum aduthide maathramaan groupinu aupachaarika namam labhichathu. 1990 kalude avasaanathil, victor-hugo rainoso sphenodondiayude moonnu prathyeka janussukal (clevosorus, brachirinodon, polyspenodone) parasparam adutha bandhamundennu sthaapichu. ettavum ennamullathum ariyappedunnathumaaya janussaaya "clevosorasinu" sesham addeham eee moonnu janussukalkkum "clevosorukal" enna anoupachaarika namam nalki."clevosorukale eee kramatthile jeevichirikkunna eaka amgamaaya tuvattaara (" "sphenodon" ") adangiyirikkunna rinchosephalian kudumbamaaya sphenodontidae kudumbatthile amgangalaayi addeham kanakkakki"."
2006-ll bonapart syusum oduvil clevosoriesinu clevosoridae kudumbamaayi oru aupachaarika perum vargeekarana rankum nalki. clevosorus, brachirinodon", "polyspenodone" ennivayude avasaanathe pothuvaaya poorvvikanaayum athinte ellah pingaamikalaayum avar clevosoridae nirvachichu. 2015-ll, eee kudumbatthinte nirvachanam "ellah varggangalum" sphenodoninekkaal "clevosorusumaayi" kooduthal adutha bandhamullathayi parishkarichu. ennirunnaalum, eee kudumbatthinte nirmmaanam sphenodontideykkulla avayude sthaanavumaayi vairudhyam srishtikkunnu, kaaranam oru taxonomic kudumbam mattoru kudumbatthinullil aakaan kazhiyilla. sphenodondiyanukalude oru vishalamaaya groupaayi sphenodontidae upayogikkunna srothassukal clevosoridae enna padam upayogikkunnilla, pakaram 'clevosorukal' enna anoupachaarika padam upayogikkunnathu thudarunnu. maruvashathu, clevosoridae upayogikkunna srothassukal sphenodontidae upayogikkunnilla. chilar rund kudumbangalum upayogikkunnilla, pakaram 'clevosorukal', 'advanced sphenodontians' enniva thiranjedukkunnu.
vivaranam.
vikasicha aadyathe pradhana spenodontian grouppukalil onnaanu clevosorukal, koodaathe triasic avasaanathilum aadyakaala jurassic kaalaghattatthilum lokamembaadum vitharanam cheyyappettu. "clevosorus" prathyekichum vyaapakavum vaividhyapoornavumaayirunnu, triasic-jurassic vamshanaashathe athijeevikkukayum niravadhi speesheesukalil ninnu ariyappedukayum cheythu.
muthirnna clevosorukal avayude hraswavum boxy mookkukalum kaaranam sphenodontianmaaril sradheyamaanu. thalayottiyude aantorbittal mekhala (annukalkku munnilulla bhagam) mikka clevosorukalileyum muzhuvan thalayottiyude neelatthinte naalilonn maathrame ulkkollunnulloo, ennirunnaalum "clevosoracy" nte chila enangalkku alpam neelamulla thalayotti veendum labhikkunnu. mattu rhinecosephalianmarepole, thalayottiyude pinbhaagathu temporal fenestre ennu vilikkunna rund jody valia dwaarangal avarkkundaayirunnu. thalayottiyude naalilonn neelamulla mikka clevosorukalilum thaazhathe temporal fenestre (thalayottiyude vashangalil) valare valuthaanu."ellah clevosorukalkkum valare neelamulla jugal asthikalundu, avaa thalayude pinbhaagathulla schwamosal asthikal vare neendunilkkunnu, eee prakriyayil avayude thaazhathe temporal fenestreyude mukal attavum roopappedunnu.
mattu sphenodondianukaleppole, clevosorukalkku vaayayude melkkoorayil niravadhi pallukal undaayirunnu. avarude pallukal accrodent aayirunnu, athaayath avaa pallukalude sokkattukalil ninnu valarunnathinekkaal asthiyil ninnu nerittu valarnnu. pallukalude ettavum valia puram varii maxilla asthikalumaayi bandhippichirikkumbol ettavum akathe cheria pallukal terrigoid asthikalil varikalaayi koottiyittirunnu. maxillary, terrigoid pallukalkkidayil, clevosorukalkku savisheshamaayi oro paletin asthiyilum valia pallukalude oru variyum oro paalattinte akathe muun moolayil oru adhika otappetta pallum undaayirunnu.
clevosorukalkku avarude danthangalude (thaazhathe thaadiyellukal) attathu pallukalude oru variyundaayirunnu. cheruppakkaaril, eee pallukal spike poleyum praanikaleyum mattu akasherukkaleyum kazhikkaan nannayi anuyojyamaayavayumaayirunnu. ennirunnaalum, oro clevosorukalkkum praayamaakumbol, avayude thaadiyellukal cheruthum kooduthal karuthuttathumaayi. koodaathe, avayude maxillary, dantha pallukal moorchayulla cutting edjilekku shayikkukayum aadhunika "euromastics" pallikalude thaadiyellukalkk samanamaaya oru "kokku" polulla thaadiyellu ghadana srishtikkukayum cheiyunnu. paristhithishaasthrathile "euromastics" nuu samaanamaayi muthirnna clevosorukal sarvvabhakshikalo sasyabhukkukalo aayirikkam.
vargeekaranam.
shsio mattullavarum" ennathinte phylogenetic vishakalanathe adisthaanamaakkiyulla clevosoridaykulle bandhangalude oru cladogram chuvadeyundu."(2015):
"opistodondiyayude sahodari taxon enna nilayil clevosoridaic purathu "clevosorus" lattidans "kandethi.

