
articulate (crinoidia)

ellah jeevichirikkunna crinoid speesheesukalum ulppede crinoidia klaasinullile oru upavibhaagamo suuppar ordero aanu articulate. avaa saadhaaranayaayi zee lillie (stacked crinoidukal) allengil thoovalukal nakshathrangal (unstacked crinoidukal) ennariyappedunnu. praayapoorthiyaaya ghattathil guda plettinte abhavavum entonural sisttathinte saannidhyavum moolam vamshanasham sambhavicha upavibhagangalil ninnu articulate verthirikkunnu. triasik kaalaghattatthilaanu phoosil recordil articulatta aadyamaayi prathyakshappettath, ennirunnaalum ippol vamshanasham sambhavicha mattu crinoid grouppukal oordovishiyanil ninnaan uthbhavichath.
savisheshathakal.
articulate pentamerous samamiti prakadippikkunnu. asthibandhangalaal orumichu pidichirikkunna niravadhi discukal adangiyirikkunna thandu, calcerus plettukalude vrithangal kondu nirmmicha oru calix allengil kappine pinthunaykkunnu. komaattulidukalil, larva ghattathethudarnnu thandu vikasikkunnu, ennaal praayapoorthiyaakaathavar swathanthramaaya oru nilanilpp ettedukkunnathinaayi ettavum mukalilulla disk ozhike ellaam kalayunnu. ooral plettil ninnu vyaapichukidakkunna oosikalukalude articlated seerees adangiya anchu palappozhum shaakhakalulla kaikal articulattayude phudu-capture mechanism roopappeduthunnu. articulattayude kaikal pinnilullavayaanu, avaykku bhakshanathinulla uparithala vistheernnam phalapradamaayi vardhippikkunnathinaayi avaykkoppam marimari pinnyoolukal shaakhakalaayi varunnu. eee pinnyoolukalkellaam siliated ambulacral groovukal undu, avaa kaikalil valia groovukal roopappeduthunnu, ithu ooral plettinte mukalile uparithalathil gudadvaarathinaduthulla vaayayilekku nayikkunnu.
articulate nishkriya suspension feedarukalaanu. pinnyoolukalil sthithicheyyunna moonniratti tube adii upayogichu avaa aalgakale pidichedukkunnu, siliated ambulacral kanaalukal eee aalgakale vaayilekk kondupookunnu. avaa nishkriya feedarukalaanenkilum, chila arttikulettakal thandinte adithattil chalana samvidaanangalode allengil kaikal upayogichu verpeduthukayum valikkukayum cheythukondu mikacha bhakshana mekhalakalilekku neengunnathu nireekshikkappettundu. 2004 leeii kanakkanusarichu, vivaricha 540 speesheesukal rund pradhana kramangalil pedunnu. parambaraagathamaaya back body roopamulla borguiticrinidukal ariyappedunna enangalil ekadesham 15 sathamaanam varum, athesamayam commatulidukal bakkiyullavayil bhooribhaagavum baakkiyund.
vargeekaranam.
samudra jeevikalude loka rajisttar anusarichu, aarttikulattayil inipparayunna kudumbangal ulppedunnu

