
trisecfora

ippol maryland, north carolina, virgenia ennee raajyangalude mayoseen theerapradeshangalil thaddesheeyamaayi kaanapedunna vamshanasham sambhavicha vettayaadal ocenebrinid murexukalude oru janussaanu trisecfora, akvittaaniyan yugam muthal seravalian yugathinte avasaanam vare avaa vamshanasham sambhavichu. eee janussinteyum avayude bandhukkaludeyum pothuvaaya peru "ekfora" (kall) ennaanu.
padavyuthpathishaasthram.
ekfora" enna peru greak aanu, athaayath "boying outtu"."oru amgathinte projecture allengil oru nirayude roopeekaranathe soochippikkaan vitruvius aanu eee vaakk aadyam upayogichathu, ivide shellil ninnu project cheiyunna vyathirikthamaya" "tii-aakruthiyilulla" "vaariyellukale soochippikkunnu". eee janussile ellah amgangalkkum moonnu vaariyellukal undennu soochippikkunnathinu "triss" enna prefix cherkkunnu.
upavibhagangal.
1988 ll pettoochu aadyam nirddeshichathupole, oru upavibhaagathin saankethikamaayi athil adangiyirikkunna janusinu munbu pookaan kazhiyillengilum, "ekfora" ("sensu stricto") yude oru mungamiyaaya upavibhagamaayi "trisecfora" avatharippichu. pinneedu, pettoochu "trisecfora" yeei poornna janussinte padaviyilekku prolsaahippikkum.
parinamam.
"oligozene muthal mayoseen ekfora "echphorosycon" vareyulla moonnu makal janussukalil onnaanu "trisecfora", mattu rund "syphocphora", "chesathais" ennivayaanu. "chesapeak ulkkadalile akvittaaniyan kaalaghattatthil oru speeshiyeshan sambhavathil "trisecfora" yum athinte sahodari janussum "echphorosyconil" ninnu vyathichalichu. langian kaalaghattatthil, "trisecfora" athintethaaya speeshiyeshan sambhavathin vidheyamaayi, avide niravadhi speesheesukalum vyathyastha vamshaavaliyile aadyathethum "ekfora" janussile "ekfora wardy" uthppaadippikkappettu. echphorosycon", "chesathais", "ekfora" (athinte upavibhagamaaya "planecfora" ennivayumaayi chernnu) ennivayumaayi "trisecfora" inam seravalian vamshathinte arambham vare nilaninnirunnu, appol "echphorosycon" vamshanasham sambhavichu ("trisecfora" nte sahodari janussaaya "syphocphora" pinneedu langian kaalaghattatthil vamshanasham sambhavichu). "seravalian kaalaghattatthinte madhyathil oru choodu sambhavichu aaa janussile avasaanathe inatheyum chesathayisineyum illaathaakkiyappol "trisecfora" thanne vamshanasham sambhavikkukayum athupole thanne (floridian pavizhapputtukalile pleosene vare nilanilkkunna) "planecfora" illaathaakkukayum cheythu.