syntomepresopus

arcosorifominte vamshanasham sambhavicha oru janussaanu syntomepresopus ("hraswa mukham" ennartham), orupakshe arisonayude triasic kaalaghattatthinte avasaanathil ninnulla oru crocodylomorph. ariyappedunna oreyoru inam ezz aanu. sucheroram. "syntomepresopus" asaadhaaranamaamvidham hrasvamaaya shabdamullathum, pilkkala cretatius notosachian "simosucus" maayi thaarathamyappeduthaavunnathu ithu triasik stem-aarkkosorukalum cretatius aarkkosorukalum thammilulla samyojana parinaamatthinte udaaharanamaayi kanakkaakkappedunnu.
kandethalum naamakaranavum.
plasserias" kwaarikk thottumukalilum dauns kwaariyude pradhana chakravaalathinu thottumukalilumayi kizhakkan arisonayil sthithicheyyunna dauns kwaariyile oru pradeshathu "syntomipresopasinte" fossilukal kandethi. 2010ll aarambhicha khananangalude oru parambarayude bhaagamaayi bhaagamaayi 2013num idayil north carolina museum oof naachural sciences (enn. sii. ezz. emm) appalechiyan stettu yooniversittiyum (eiii. ezz. yuu) samyukthamaayi nadatthiya khananathilaanu fossilukal kandeduthathu. eee kwari vipulamaaya triasic chinkle roopeekaranathinte bhagamaanu, koodaathe radiometric reethiyil ekadesham 0.16 dasalaksham varsham pazhakkamulla paramavadhi praayatthil nikshepichathaayi kanakkaakkappedunnu.
holotype maathrkayil (enn. sii. ezz. emm. <aii. dii. 1>) rund anubandha kashanagal adangiyirikkunnu, avayil paaradaippukal enn. sii. ezz. emm. 26729 (idathu thaadiyellinte pinbhaagathu ninnulla oru articular complexes), enn. sii. ezz. emm. 26730 (idathu maandibilinte munbhagam), enn. sii. ezz. emm. 27677 (idathu maandibilinte madhyabhagam), enn. sii. ezz. emm. 27678 (mattoru idathu articular complexes), enn. sii. ezz. emm 29061 (valath articular complexes) enniva ulppedunnu. iva kuranjathu randuperudethaayirikkaam, pakshe orupakshe naalu vyakthikal vare. thaadiyellu vasthukkalumayi bandhapetta thalayottiyudeyum masthishkathinteyum (enn. sii. ezz. emm. 27679) pinbhaagavum "syntomipresopacy" nteyum chila trika kasherukkaludeyum (enn. sii. ezz. emm. 27991, enn. sii. ezz. emm. 27992) bhagamaayirikkaam, pakshe avaye shareeraghadanayude adisthaanathil "syntomepresopus" ennu krithyamaayi paraamarsikkaan kazhiyilla. ennirunnaalum, phoosil kidakkayil samanamaaya valippamulla kasherukkal illaathathinaal, samanamaaya samrakshanamullathinaal, dauns kwaariyil ninnu munbu ariyappettirunna eathenkilum mrugavumaayi ithu poruthappedunnilla ennathinaal, thalayotti "cintomyprosopus" ennu paraamarsikkunnathil heckert sahapravarthakarum aathmavishwaasam prakadippichu.
heckert sahapravarthakarum greak prefix "syntomy-" ("short"), "prosopus" ("pheys") ennivayil ninnu "syntomiprosopus" ennu namakaranam cheythu. heckertine sahapravarthakareyum pinthunaykkunnathinum sahayikkunnathinum swamedhayaa 22 varsham chelavazhicha scott (mejar), karen sachar ennivarude bahumaanaarthamaanu "sacheroram" enna prathyeka peru, "syntomipresopasinte" avashishtangal kandethiya dauns kwaariyile khananathil pankedutthathu ulppede.
vivaranam.
"syntomepresopus" thaazhathe thaadiyellile asthikalum brainkesinte bhagamaayirikkaam ariyappedunnathu. ennirunnaalum, avasaanathe triasic uragangalil thaazhathe thaadiyellu vyathyasthamaan, avaa neelamullathupole cheruthum veethiyullathum agrangalil yuu aakruthiyilulla vakravumaayi kandumuttunnu. thaazhathe thaadiyellu shakthamaan, ekadesham 2.5x uyaramullathum athinte attathu agrathekkaal eratti aazhamullathumaan. vyakthamaaya paatten illaathe kramarahithamayi sthaapicha kuzhikalum kuzhikalum ulla parukkan ekadesham gadanayullathumaaya uparithalamaan avaykkullathu.
"syntomipresopasinu" valare kurachu pallukalundu, ettavum cheria saambilinu ettu sajeeva pallukalude sthaanangal maathrameyulloo, ettavum valia saambilinu naalu ennam maathrameyulloo. pallukale 2-4 muun pallukalaayi thirichirikkunnu, avaa munvashath (konukalulla), oru valia naaya polulla (kanniniphom) pallum thudarnnu 3 cheria poost canine pallukalum, toothtoyile ettavum cheria settum. valia saambilukalil, eee poost kaaninukalude pallu sokkattukal thaadiyellu asthiyilekku veendum agiranam cheyyukayum pallukal nashtappedukayum cheiyunnu. pallukal asamathvamullathum paranna baahya uparithalavum bulbus aantharika uparithalavumullavayuman, avayude arikukalil valia denticalukal (serationukal) undennu thonnunnu.
vargeekaranam.
"mandibular fenestrayudeyum pallukalude saannidhyatheyum adisthaanamaakki "syntomepresopus" oru arcosorifom aanennu theliyikkappedunnu. ennirunnaalum, aarkkosoriformukalkkumpularkumppumplaram bandhangal thirichariyaan thaazhathe thaadiyellile savisheshathakalonnum thirichariyaan kazhiyilla. prathyekichu, rugos mandibular symphysis, valia caninifom pallu, short prearticular, thaadiyellinte aantharika bhaagath nannayi thurannukaattappedunna koneeya ennivayellaam chrocodylomorphukalil vyathyasthamayi kaanapedunnu, ennirunnaalum aadyathe rund swabhaavasavisheshathakalum arcosorifomukalil mattidangalilum kaanapedunnu.
thalayotiyile masthishkavum pinbhaagavum, "syntomepresopus" ennu shariyaayi paraamarshikkukayaanenkil, aadyakaala chrocodylomorphukalumaayul bandhathe kooduthal soochippichekkaam. eee thalayottiyude crocodylomorph savisheshathakalil madhyarekhayil oru saagittal krastt (fuse cheythathum uyarthiyathumaaya paariyettal asthikal roopappettathum), paariyettalukalude pinvasham thalayottiyude madhyarekhayil ninnu ekadesham 90° ll vyathichalikkunnu, brainkesinte laterosphenoid parabasispenoid thammilulla sanbarkkam, thalayottiyude madhya cheviyude protic asthiyum puram uparithalathile kwaadrett asthiyum thammilulla sanbarkkam enniva ulppedunnu.
ennirunnaalum, bhagika thalayottikk kooduthal uruthirinja chrocodylomorphukalil (basiosippittalinte adibhaagathu allengil parabasisphenoidil aazhathilulla pollal polullava) kaanapedunna savisheshathakal illa, koodaathe kooduthal uruthirinja chrocodylomorphukalil (thalayottiyil uyarnna aantharika caroted dhamanikalude praveshana kavaadangalum madhya cheviyile parishkkaranangalum polullava) nashtappetta savisheshathakal samrakshikkunnu. eee swabhaavasavisheshathakalude samyojanam soochippikkunnathu "syntomepresopus" yadhaarthathil oru crocodylomorph aanenkil, athu thaarathamyena adisthaanamaaya aadyakaala-vyathichalikkunna inamaayirikkanam, ithu "sphenosucci" nekkaal kuravaanu.
paleobiology.
syntomipresopasinte" cheria maathruka kooduthal thuranna pallu sokkattukal, munnil naalu, oru naaya polulla pallu, pinnil moonnu poost canin pallukal enniva samrakshikkunnu. valia maathruka moonnu muun pallukalum kaniniform maathrame samrakshikkunnulloo, backie pallu sokkattukal thaadiyellu asthiyilekku poornnamaayo bhaagikamaayo punarnirmmikkunnu. ithu soochippikkunnathu "syntomepresopus" pakwata praapikkumbol eee pallukal nashtappedukayum athinte pallukalude pakuthiyolam nashtappedukayum cheiyunnu ennaanu. chila aarkosorukal pakwata praapikkumbol pallukalude ennam kuraykkunnathaayi ariyappedunnu (udha.jii. ennirunnaalum, tyranosoridukalum orupakshe aadhunika crocodyleanukalum), "limusorus" maathramaan praayapoorthiyaakaathavarkkum muthirnnavarkkum idayil samanamaaya gurutharamaaya pallu nashtam kaanikkunnath (ithil praayapoorthiyaakaathavarkkavar moorchayullathum chulivullathumaaya pallukal undengil avaa muthirnnavaril kokkinaayi nashtappedunnu).
palio ekkolaji.
syntomepresopus" enna athe paalikalil ninnu kandedutha mattu fossilukal anischithamaaya phytosorukalaanu. ennirunnaalum, thottadutthum mukalilumulla paalikalil sasyabhukkukalulla kavachitha ettosorukal "desmetosookas", "calyptosucus", "techovasucus" ennivayude fossilukalum oru diasynodond (orupakshe "plasserias") oru anjjaatha alocotosore adangiyirikkunnu.

