seudopetalichida

germmaniyile hansrakkile lover devonian straattayile apoorva phosilukalil ninnu maathram ariyappedunna cheruthaayi kavachithamaaya placodermukalude vamshanasham sambhavicha oru kramamaanu seudopetalichthaida. stensiyoyalla heinsey", "renanida" enniva pole, syoodopettalichidukalka kizhanguvarggangalude mosaik kondu nirmmicha kavachamundaayirunnu. stensiyoyella heinsey" pole, syoodopettalichidukale sthaanam placodermicullil samshayaaspadamaanu. ennirunnaalum, poornnavum krash cheyyaathathum vyakthavumaya maathrkakal illaathathinaal, syoodopettalichidukalka, oru mikacha vaakkinte abhaavathil, praavukal aayi maravunna mattu grouppukalonnumilla.
maruvashathu, kandethiya thakartha saambilukalil nadatthiya shareeraghadana padanangal anusarichu, seudopetalichidaye placodermukalaayi kanakkaakkunna vidagdhar avaye pyctodondukalekkaal purogamicha oru groupaayi kanakkakkunnu. athupole, seudopetalichthaidaye arthrodireukal + phylolepida + antiarchi trichotamy, akantothorasi + renanida dicotamy ennivayude sahodari groupaayi placoder anukoola vidagdhar kanakkakkunnu.
seudopetalichis problemaca" enna inamaanu ettavum ariyappedunna inam. chila vidagdhar "parapliobatis heinrichi" "pii" yude athe inamaanennu abhipraayappettittund. prasnakaramaaya", ennaal, pinneedulla enangalude maathrkakal muun enangalude maathrkakalekkaal vyathyasthamaaya sthaanathu thakarnnathinaal, rund roopangaludeyum shareeraghadana vyathyasthamayi kaanapedunnu (moy-thomas & miles). ennirunnaalum, kooduthal maathrkakal upayogichu maathrame eee prashnam pariharikkaanaakoo. nesariostoma granulosum" ennathinte maathrkakal shareeraghadanayil mattu rund syoodopettalichaidukalinnil vyathyasthamaan. "enn. granulosum "stensiyoyella heynsiyumaayi" upariplavamaaya saamyam vahikkunnu, eee saamyathayaan stensiyoyilideykil syoodopettalichaidukale groupingilekk nayichathu.

