Source : Webster's Revised Unabridged Dictionary (1913)

Eozoonal \E`o*zo"["o]n*al\ ([=e]`[-o]*z[=o]"[o^]n*al), a.
   (Paleon.)
   Pertaining to the eozo["o]n; containing eozo["o]ns; as,
   eozo["o]nal limestone.