What are examples of fruits that have no seeds ?
G. A. Smith , however , pointed out that the four genera Holyoak used as examples of " strong jawed " parrots based on radiographs , " Cyanorhamphus " , " Melopsittacus " , " Neophema " and " Psephotus " , actually have weak jaws in life , and that the morphologies cited by Holyoak do not indicate strength .