paleornithology

from WordNet (r) 3.0 (2006)

paleornithology
    n 1: the paleobiology of birds [syn: {paleornithology},
         {palaeornithology}]

from The Collaborative International Dictionary of English v.0.48

Paleornithology \Pa`le*or`ni*thol"o*gy\
   (p[=a]`l[-e]*[^o]r`n[i^]*th[o^]l"[-o]*j[y^]), n. [Paleo- +
   ornithology.]
   The branch of paleontology which treats of fossil birds.
   [1913 Webster]