The Collaborative International Dictionary
palaeo-
palaeo- \palaeo-\, Palaeo- \Pa"l[ae]*o-\ See Paleo-.
palaeo-
Paleo- \Pa"le*o-\ [Gr. palaio`s, adj.] A combining form meaning old, ancient; as, palearctic, paleontology, paleothere, paleography. [Written also pal[ae]o-.]
Douglas Harper's Etymology Dictionary
palaeo-
see paleo-.
Wiktionary
palaeo-
pre. (alternative spelling of paleo- English)