▁hal li . ▁ ▁Refer red ▁spec im ens ▁SM NS ▁ 1 2 3 5 2 ▁and ▁SM NS ▁ 1 2 3 5 2 a ▁Much ▁controvers y ▁has ▁ar isen ▁however , ▁about ▁the ▁association ▁with ▁the ▁later ▁material ▁referred ▁by ▁von ▁Hu ene . ▁In ▁ 1 9 8 2 ▁John ▁Ost rom ▁claimed ▁that ▁SM NS ▁ 1 2 3 5 2 ▁and ▁SM NS ▁ 1 2 3 5 2 a ▁origin ated ▁from ▁a ▁tax on ▁different ▁from ▁the ▁hol ot ype . ▁In ▁ 2 0 0 6 ▁and ▁ 2 0 0 8 ▁Fab ien ▁Kn oll ▁concluded ▁that ▁SM NS ▁ 1 2 3 5 2 ▁represented ▁a ▁cro c ody l omorph ▁and ▁SM NS ▁ 1 2 3 5 2 a ▁a ▁cro c ody l omorph ▁or ▁some ▁other ▁bas al ▁arch osa ur . ▁The ▁post c ran ial ▁ske leton , ▁for ▁which ▁she ▁reserved ▁the ▁invent ory ▁number ▁SM NS ▁ 1 2 5 9 1 , ▁was ▁a ▁co el oph y so id ; ▁and ▁the ▁sk ull , ▁now ▁indicated ▁with ▁the ▁number ▁SM NS ▁ 1 2 5 9 1 a , ▁a ▁perhaps ▁more ▁derived ▁ther op od , ▁possibly ▁a ▁bas al ▁member ▁of ▁the ▁T et an ura e . ▁ ▁In ▁ 2 0 1 2 ▁Kn oll ▁after ▁a ▁C AT - scan ▁re aff ir med ▁that ▁SM NS ▁ 1 2 3 5 2 ▁was ▁a