▁" Sim ians ", ▁do ▁not ▁like ▁the ▁tribe ▁and ▁attempt ▁to ▁kill ▁them . ▁ ▁Pre histor ic ▁Cre atures ▁Fe ature d ▁According ▁to ▁a ▁source , ▁about ▁twenty ▁cre atures ▁were ▁planned ▁for ▁the ▁game . ▁The ▁cre atures ▁that ▁were ▁confirmed ▁for ▁the ▁game ▁were : ▁▁ ▁Ty ran n osa urus ▁re x ▁ ▁V elo ci ra pt or ▁ ▁P ach y ce phal osa urus ▁ ▁An k yl osa urus ▁ ▁A pat osa urus ▁ ▁Gall im im us ▁ ▁P ter an odon ▁ ▁Sar cos uch us ▁ ▁D unk le ost eus ▁ ▁Am mon ite ▁ ▁Meg an ura ▁ ▁Sm il odon ▁ ▁D odo ▁ ▁A pe - men ▁ ▁Mark eting ▁The ▁first ▁tra iler ▁was ▁released ▁on ▁ 2 ▁February ▁ 2 0 0 4 . ▁ ▁Music ▁According ▁to ▁an ▁FA Q ▁with ▁I GN . com , ▁each ▁of ▁B . C . s ▁levels ▁had ▁its ▁own ▁music ▁which ▁would ▁relate ▁with ▁the ▁level ' s ▁atmosphere . ▁ ▁Can cellation ▁Even ▁while ▁the ▁game ▁was ▁still ▁in ▁production , ▁Mol y ne ux ▁said ▁that ▁he ▁was ▁uns ure ▁when ▁he ▁could ▁release ▁it ▁due ▁to ▁" the ▁am bit ious ▁nature ▁of ▁the ▁game play ▁and ▁the ▁high ▁standards ▁the ▁people ▁developing ▁it ▁are ▁pushing ▁for ." ▁According ▁to ▁one ▁article , ▁as ▁of ▁May , ▁ 2 0 0 2 , ▁"[ the ▁demo ▁build ] ▁was ▁roughly ▁