
kaserakal

endosettideyil ulppeduthiyittulla "naano" tharam agravum holocovanitic (hooloo muzhuvanayirikkukayum "chone" athinte kuzhal aakruthiyilulla thurakkaline soochippikkukayum cheiyunna) mathilulla oru ventral sifankilum ulla oru mithamaaya valia endosaridaanu chassioseras ("chaasiyante kombu"). agrabhaagathe sifankil veekkam rekhamsha profile upachathuraakrithiyilaanu. endoconukalkku idatharam neelamundu.
"1958ll russo pushpamaanu "chassioseras" ennu namakaranam cheythath. champlane thadaakatthile valcor dveepile madhya chassianil (lover middle oordovishiyan) ninnaan eee genotype "chassioseras valcorrence". "asioseras" "allotrioceratidale ulppedunna pookkalaaya" "perkinsoseracinode" "saamyamullathaan-vichitramaaya fosilaaya" "allotrioseras" "adisthaanamaakki endosaridayil pookkunna oru kudumbam"."
chassioseras", "perkinsoseras" ennee tharangal nyoo meksikoo myoosiyathile paleantology shekharathilum aalbukkarkkile naachural histtari aandu sciencilum sookshichirikkunnu, avide avaa sokoroyile nyoo meksikoo beuro oof mainsile pushpa shekharathil ninnu maatti.