sentence: babookari , a ground-living new world monkey descended from the present-day uakari ; carakiller , a giant , flightless bird of prey , descended from the present-day caracara ; cryptile , a lizard that inhabits salt flats and has a sticky neck frill for catching flies ; deathgleaner , a giant , carnivorous bat descended from the vampire bat of south and central america ; gannetwhale , a large , flightless , seal - like seabird descended from the present-day gannet ; rattleback , an armored rodent descended from the present-day paca or agouti ; there are two species , one in the amazonian grasslands and the other in the northern deserts ; gryken , a slender terrestrial mustelid descended from the present-day pine marten ; scrofa , a wild pig living on the mediterranean salt flats descended from the wild boar .