▁ 2 0 0 3 , ▁a ▁broad ▁cons ensus ▁has ▁formed ▁supporting ▁the ▁E cd y so zo a ▁ ▁and ▁in ▁ 2 0 1 1 ▁the ▁Dar win – W al lace ▁Medal ▁was ▁awarded ▁to ▁James ▁Lake ▁for ▁the ▁discovery ▁of ▁the ▁New ▁Animal ▁Ph y log eny ▁consisting ▁of ▁the ▁E cd y so zo a , ▁the ▁L oph ot ro cho zo a , ▁and ▁the ▁De uter ost om ia . ▁ ▁Co el om ata ▁hypothesis ▁ ▁Before ▁E cd y so zo a , ▁one ▁of ▁the ▁prev ail ing ▁theories ▁for ▁the ▁evolution ▁of ▁the ▁bil ater al ▁animals ▁was ▁based ▁on ▁the ▁morph ology ▁of ▁their ▁body ▁cav ities . ▁There ▁were ▁three ▁types , ▁or ▁gr ades ▁of ▁organization : ▁the ▁A co el om ata ▁( no ▁co el om ), ▁the ▁Pseud oco el om ata ▁( partial ▁co el om ), ▁and ▁the ▁Eu co el om ata ▁( true ▁co el om ). ▁Ad out te ▁and ▁cow ork ers ▁were ▁among ▁the ▁first ▁to ▁strongly ▁support ▁the ▁E cd y so zo a . ▁With ▁the ▁introduction ▁of ▁mole cular ▁ph y log en et ics , ▁the ▁co el om ate ▁hypothesis ▁was ▁abandoned , ▁although ▁some ▁mole cular , ▁ph y log en etic ▁support ▁for ▁the ▁Co el om ata ▁continued ▁until ▁as ▁late ▁as ▁ 2 0 0 5 . ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁U C MP - E