DRAGON TEETH BY MICHAEL CRICHTON

DRAGON TEETH BY MICHAEL CRICHTON is supposed to be a lost manuscript by the late author.  I have read most of Crichton's work & this just fit into his style. Mostly, a wild west, eighteen hundred historical fiction it doesn't have the flair Crichton had.  Could this be a trunk book, a book that was finished and either rejected by publishers or the author and tossed aside or someone else's handywork?  I 'm not sure nor will I hazard to guess.  My take is if it is Crichton's work his heirs should have left it in the trunk!