▁post - c ran ial ▁b ones . ▁They ▁lived ▁between ▁the ▁water ▁and ▁the ▁land ▁feed ing ▁on ▁live ▁fish ▁as ▁is ▁evident ▁in ▁the ▁shape ▁of ▁their ▁j aw ▁h inge ▁and ▁their ▁two - ed ged ▁teeth . ▁Because ▁the ▁nas al ▁b ones ▁are ▁pa ired ▁and ▁the ▁nas al ▁a pert ures ▁are ▁both ▁anterior ▁and ▁ph ary n ge al , ▁it ▁is ▁indicated ▁that ▁they ▁did ▁bre at he ▁air . ▁The ▁location ▁of ▁the ▁or bits ▁on ▁the ▁sk ull ▁are ▁raised ▁up ▁higher ▁than ▁the ▁sn out ▁allowing ▁for ▁the ▁animal ▁to ▁stick ▁out ▁its ▁eyes ▁while ▁the ▁rest ▁of ▁the ▁body ▁is ▁under water . ▁L ox om ma ▁had ▁ 4 ▁lim bs ▁that ▁were ▁p addle - like , ▁based ▁on ▁the ▁presence ▁of ▁one ▁hum er us ▁that ▁is ▁el ong ated ▁and ▁broad ▁below ▁and ▁narrow ▁at ▁its ▁upper ▁end , ▁that ▁they ▁used ▁to ▁sw im . ▁It ▁is ▁concluded ▁that ▁they ▁were ▁a ▁rather ▁sl ugg ish ▁re pt ile ▁that ▁was ▁still ▁capable ▁of ▁rapid ▁movements ▁for ▁pred ation , ▁sw imming ▁like ▁a ▁fish ▁but ▁breath ing ▁air ▁like ▁the ▁all ig ators ▁or ▁cro cod iles ▁of ▁today . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁L ox om ma ▁at ▁the ▁Pale obi ology ▁Database . ▁ ▁Category : B ap het oid s ▁Category : Car bon ifer ous ▁t et rap ods ▁of ▁Europe <0x0A> </s> ▁Tim ▁K ister ▁( born ▁