palynology

Concise Oxford English Dictionary © 2008 Oxford University Press:
palynology /ˌpalɪˈnɒlədʒi/

▶noun the study of pollen grains and other spores, especially as found in archaeological or geological deposits.

– derivatives
palynological adjective,
palynologist noun.

– origin 1940s: from Gk palunein ‘sprinkle’ + -logy.