Source : WordNet®

green dinosaur
     n : a living fossil or so-called `green dinosaur'; genus or
         subfamily of primitive nut-bearing trees thought to have
         died out 50 million years ago; a single specimen found in
         1994 on Mount Bartle Frere in eastern Australia; not yet
         officially named [syn: {Bartle Frere}, {genus
         Bartle-Frere}]