The Collaborative International Dictionary of English v.0.48:

Paleontologist \Pa`le*on*tol"o*gist\
   (p[=a]`l[-e]*[o^]n*t[o^]l"[-o]*j[i^]st), n. [Cf. F.
   pal['e]ontologiste.]
   One versed in paleontology.
   [1913 Webster]

WordNet (r) 3.0 (2006):

paleontologist
    n 1: a specialist in paleontology [syn: paleontologist,
         palaeontologist, fossilist]