The Collaborative International Dictionary of English v.0.48:

Osteologic \Os`te*o*log"ic\, Osteological \Os`te*o*log"ic*al\,
   a. [Cf. F. ost['e]ologique.]
   Of or pertaining to osteology. -- Os`te*o*log"ic*al*ly,
   adv.
   [1913 Webster]