▁unusual , ▁as ▁they ▁more ▁closely ▁res emble ▁mol ars ▁or ▁prem ol ars ▁from ▁a ▁m amm al ▁than ▁normal ▁cro c ody l iform ▁teeth , ▁as ▁they ▁are ▁large ▁and ▁broad , ▁more ▁su ited ▁to ▁gr inding ▁than ▁s lic ing . ▁The ▁nas al ▁b ones ▁just ▁touch ▁the ▁borders ▁of ▁the ▁n ares ▁anterior ly , ▁and ▁just ▁touch ▁the ▁front al ▁b ones ▁posterior ly ▁in ▁a ▁V - sh aped ▁s uture , ▁as ▁they ▁are ▁very ▁sl ender ▁and ▁el ong ated . ▁Very ▁little ▁of ▁the ▁pre front als , ▁and ▁none ▁of ▁the ▁front als , ▁is ▁preserved ▁at ▁all . ▁The ▁lac rim als ▁are ▁almost ▁perfectly ▁vertical , ▁and ▁much ▁t aller ▁than ▁they ▁are ▁long . ▁A ▁part ▁of ▁the ▁jug al ▁is ▁expanded , ▁forming ▁a ▁sh elf ▁project ing ▁almost ▁across ▁the ▁to oth ▁row ▁vert ically , ▁perhaps ▁protect ing ▁the ▁teeth . ▁The ▁mand ibles ▁have ▁no ▁teeth ▁preserved , ▁and ▁only ▁one ▁dent al ▁al ve ol us , ▁right ▁at ▁the ▁posterior ▁end ▁of ▁the ▁dent ary ▁b one . ▁It ▁is ▁estimated ▁that ▁the ▁whole ▁mand ible ▁was ▁about ▁ 1 3 5 - 1 4 0 ▁mm ▁long . ▁A ▁r idge ▁extends ▁along ▁the ▁external ▁side ▁of ▁the ▁mand ible , ▁which ▁may ▁have ▁been ▁for ▁the ▁attachment ▁of ▁soft ▁che ek ▁t issue ▁to ▁prevent ▁plant ▁matter ▁esc aping ▁while ▁being ▁che wed ▁as ▁in ▁Not os uch us