If lions and leopards and rhinos and giraffes are merely decorative, or merely a nuisance, then the world will no more mourn them than it mourns the stegosaurus or the millions of .
An adorable clutch of baby tricerotopses hatches from eggs; sloe-eyed brontosauruses wade in marshes; a bony-backed stegosaurus struggles for its life against the meat-eating .
One might as well build a zoo on a fossil bed and wait for a live stegosaurus to waddle into it, resurrected by good intentions.