mi·cro·pa·le·on·tol·o·gy 
(mī′krō-pā′lē-ŏn-tŏlə-jē, -ən-)
(mī′krō-pā′lē-ŏn-tŏlə-jē, -ən-)n.
The branch of paleontology that deals with microfossils.
mi′cro·pa′le·on′to·logic (-ŏn′tl-ŏjĭk), mi′cro·pa′le·on′to·logi·cal adj.
mi′cro·pa′le·on·tolo·gist n.